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right_angle_rotation_aux₁ : E →ₗ[ℝ] E
let to_dual : E ≃ₗ[ℝ] (E →ₗ[ℝ] ℝ) := (inner_product_space.to_dual ℝ E).to_linear_equiv ≪≫ₗ linear_map.to_continuous_linear_map.symm in ↑to_dual.symm ∘ₗ ω
def
orientation.right_angle_rotation_aux₁
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "inner_product_space.to_dual" ]
Auxiliary construction for `orientation.right_angle_rotation`, rotation by 90 degrees in an oriented real inner product space of dimension 2.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
inner_right_angle_rotation_aux₁_left (x y : E) : ⟪o.right_angle_rotation_aux₁ x, y⟫ = ω x y
by simp only [right_angle_rotation_aux₁, linear_equiv.trans_symm, linear_equiv.coe_trans, linear_equiv.coe_coe, inner_product_space.to_dual_symm_apply, eq_self_iff_true, linear_map.coe_to_continuous_linear_map', linear_isometry_equiv.coe_to_linear_equiv, linear_map.comp_apply, ...
lemma
orientation.inner_right_angle_rotation_aux₁_left
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "inner_product_space.to_dual_symm_apply", "linear_equiv.coe_coe", "linear_equiv.coe_trans", "linear_equiv.symm_symm", "linear_equiv.trans_symm", "linear_isometry_equiv.coe_to_linear_equiv", "linear_isometry_equiv.to_linear_equiv_symm", "linear_map.coe_to_continuous_linear_map'", "linear_map.comp_app...
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
inner_right_angle_rotation_aux₁_right (x y : E) : ⟪x, o.right_angle_rotation_aux₁ y⟫ = - ω x y
begin rw real_inner_comm, simp [o.area_form_swap y x], end
lemma
orientation.inner_right_angle_rotation_aux₁_right
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "real_inner_comm" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right_angle_rotation_aux₂ : E →ₗᵢ[ℝ] E
{ norm_map' := λ x, begin dsimp, refine le_antisymm _ _, { cases eq_or_lt_of_le (norm_nonneg (o.right_angle_rotation_aux₁ x)) with h h, { rw ← h, positivity }, refine le_of_mul_le_mul_right _ h, rw [← real_inner_self_eq_norm_mul_norm, o.inner_right_angle_rotation_aux₁_left], ...
def
orientation.right_angle_rotation_aux₂
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "abs_real_inner_le_norm", "eq_or_lt_of_le", "exists_ne", "finite_dimensional.nontrivial_of_finrank_pos", "finrank_span_le_card", "finset.card", "finset.card_singleton", "le_of_mul_le_mul_right", "nontrivial", "real_inner_self_eq_norm_mul_norm", "set.to_finset_singleton", "submodule" ]
Auxiliary construction for `orientation.right_angle_rotation`, rotation by 90 degrees in an oriented real inner product space of dimension 2.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right_angle_rotation_aux₁_right_angle_rotation_aux₁ (x : E) : o.right_angle_rotation_aux₁ (o.right_angle_rotation_aux₁ x) = - x
begin apply ext_inner_left ℝ, intros y, have : ⟪o.right_angle_rotation_aux₁ y, o.right_angle_rotation_aux₁ x⟫ = ⟪y, x⟫ := linear_isometry.inner_map_map o.right_angle_rotation_aux₂ y x, rw [o.inner_right_angle_rotation_aux₁_right, ← o.inner_right_angle_rotation_aux₁_left, this, inner_neg_right], end
lemma
orientation.right_angle_rotation_aux₁_right_angle_rotation_aux₁
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "ext_inner_left", "inner_neg_right", "linear_isometry.inner_map_map" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right_angle_rotation : E ≃ₗᵢ[ℝ] E
linear_isometry_equiv.of_linear_isometry o.right_angle_rotation_aux₂ (-o.right_angle_rotation_aux₁) (by ext; simp [right_angle_rotation_aux₂]) (by ext; simp [right_angle_rotation_aux₂])
def
orientation.right_angle_rotation
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "linear_isometry_equiv.of_linear_isometry" ]
An isometric automorphism of an oriented real inner product space of dimension 2 (usual notation `J`). This automorphism squares to -1. We will define rotations in such a way that this automorphism is equal to rotation by 90 degrees.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
inner_right_angle_rotation_left (x y : E) : ⟪J x, y⟫ = ω x y
begin rw right_angle_rotation, exact o.inner_right_angle_rotation_aux₁_left x y end
lemma
orientation.inner_right_angle_rotation_left
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
inner_right_angle_rotation_right (x y : E) : ⟪x, J y⟫ = - ω x y
begin rw right_angle_rotation, exact o.inner_right_angle_rotation_aux₁_right x y end
lemma
orientation.inner_right_angle_rotation_right
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right_angle_rotation_right_angle_rotation (x : E) : J (J x) = - x
begin rw right_angle_rotation, exact o.right_angle_rotation_aux₁_right_angle_rotation_aux₁ x end
lemma
orientation.right_angle_rotation_right_angle_rotation
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right_angle_rotation_symm : linear_isometry_equiv.symm J = linear_isometry_equiv.trans J (linear_isometry_equiv.neg ℝ)
begin rw right_angle_rotation, exact linear_isometry_equiv.to_linear_isometry_injective rfl end
lemma
orientation.right_angle_rotation_symm
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "linear_isometry_equiv.neg", "linear_isometry_equiv.symm", "linear_isometry_equiv.to_linear_isometry_injective", "linear_isometry_equiv.trans" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
inner_right_angle_rotation_self (x : E) : ⟪J x, x⟫ = 0
by simp
lemma
orientation.inner_right_angle_rotation_self
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
inner_right_angle_rotation_swap (x y : E) : ⟪x, J y⟫ = - ⟪J x, y⟫
by simp
lemma
orientation.inner_right_angle_rotation_swap
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
inner_right_angle_rotation_swap' (x y : E) : ⟪J x, y⟫ = - ⟪x, J y⟫
by simp [o.inner_right_angle_rotation_swap x y]
lemma
orientation.inner_right_angle_rotation_swap'
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
inner_comp_right_angle_rotation (x y : E) : ⟪J x, J y⟫ = ⟪x, y⟫
linear_isometry_equiv.inner_map_map J x y
lemma
orientation.inner_comp_right_angle_rotation
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "linear_isometry_equiv.inner_map_map" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
area_form_right_angle_rotation_left (x y : E) : ω (J x) y = - ⟪x, y⟫
by rw [← o.inner_comp_right_angle_rotation, o.inner_right_angle_rotation_right, neg_neg]
lemma
orientation.area_form_right_angle_rotation_left
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
area_form_right_angle_rotation_right (x y : E) : ω x (J y) = ⟪x, y⟫
by rw [← o.inner_right_angle_rotation_left, o.inner_comp_right_angle_rotation]
lemma
orientation.area_form_right_angle_rotation_right
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
area_form_comp_right_angle_rotation (x y : E) : ω (J x) (J y) = ω x y
by simp
lemma
orientation.area_form_comp_right_angle_rotation
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right_angle_rotation_trans_right_angle_rotation : linear_isometry_equiv.trans J J = linear_isometry_equiv.neg ℝ
by ext; simp
lemma
orientation.right_angle_rotation_trans_right_angle_rotation
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "linear_isometry_equiv.neg", "linear_isometry_equiv.trans" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right_angle_rotation_neg_orientation (x : E) : (-o).right_angle_rotation x = - o.right_angle_rotation x
begin apply ext_inner_right ℝ, intros y, rw inner_right_angle_rotation_left, simp end
lemma
orientation.right_angle_rotation_neg_orientation
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "ext_inner_right" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right_angle_rotation_trans_neg_orientation : (-o).right_angle_rotation = o.right_angle_rotation.trans (linear_isometry_equiv.neg ℝ)
linear_isometry_equiv.ext $ o.right_angle_rotation_neg_orientation
lemma
orientation.right_angle_rotation_trans_neg_orientation
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "linear_isometry_equiv.ext", "linear_isometry_equiv.neg" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right_angle_rotation_map {F : Type*} [normed_add_comm_group F] [inner_product_space ℝ F] [fact (finrank ℝ F = 2)] (φ : E ≃ₗᵢ[ℝ] F) (x : F) : (orientation.map (fin 2) φ.to_linear_equiv o).right_angle_rotation x = φ (o.right_angle_rotation (φ.symm x))
begin apply ext_inner_right ℝ, intros y, rw inner_right_angle_rotation_left, transitivity ⟪J (φ.symm x), φ.symm y⟫, { simp [o.area_form_map] }, transitivity ⟪φ (J (φ.symm x)), φ (φ.symm y)⟫, { rw φ.inner_map_map }, { simp }, end
lemma
orientation.right_angle_rotation_map
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "ext_inner_right", "fact", "inner_product_space", "normed_add_comm_group", "orientation.map" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
linear_isometry_equiv_comp_right_angle_rotation (φ : E ≃ₗᵢ[ℝ] E) (hφ : 0 < (φ.to_linear_equiv : E →ₗ[ℝ] E).det) (x : E) : φ (J x) = J (φ x)
begin convert (o.right_angle_rotation_map φ (φ x)).symm, { simp }, { symmetry, rwa ← o.map_eq_iff_det_pos φ.to_linear_equiv at hφ, rw [fact.out (finrank ℝ E = 2), fintype.card_fin] }, end
lemma
orientation.linear_isometry_equiv_comp_right_angle_rotation
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "fintype.card_fin" ]
`J` commutes with any positively-oriented isometric automorphism.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right_angle_rotation_map' {F : Type*} [normed_add_comm_group F] [inner_product_space ℝ F] [fact (finrank ℝ F = 2)] (φ : E ≃ₗᵢ[ℝ] F) : (orientation.map (fin 2) φ.to_linear_equiv o).right_angle_rotation = (φ.symm.trans o.right_angle_rotation).trans φ
linear_isometry_equiv.ext $ o.right_angle_rotation_map φ
lemma
orientation.right_angle_rotation_map'
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "fact", "inner_product_space", "linear_isometry_equiv.ext", "normed_add_comm_group", "orientation.map" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
linear_isometry_equiv_comp_right_angle_rotation' (φ : E ≃ₗᵢ[ℝ] E) (hφ : 0 < (φ.to_linear_equiv : E →ₗ[ℝ] E).det) : linear_isometry_equiv.trans J φ = φ.trans J
linear_isometry_equiv.ext $ o.linear_isometry_equiv_comp_right_angle_rotation φ hφ
lemma
orientation.linear_isometry_equiv_comp_right_angle_rotation'
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "linear_isometry_equiv.ext", "linear_isometry_equiv.trans" ]
`J` commutes with any positively-oriented isometric automorphism.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
basis_right_angle_rotation (x : E) (hx : x ≠ 0) : basis (fin 2) ℝ E
@basis_of_linear_independent_of_card_eq_finrank ℝ _ _ _ _ _ _ _ ![x, J x] (linear_independent_of_ne_zero_of_inner_eq_zero (λ i, by { fin_cases i; simp [hx] }) begin intros i j hij, fin_cases i; fin_cases j, { simpa }, { simp }, { simp }, { simpa } end) (fact.out (finrank ℝ E = 2)).symm
def
orientation.basis_right_angle_rotation
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "basis", "basis_of_linear_independent_of_card_eq_finrank", "linear_independent_of_ne_zero_of_inner_eq_zero" ]
For a nonzero vector `x` in an oriented two-dimensional real inner product space `E`, `![x, J x]` forms an (orthogonal) basis for `E`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_basis_right_angle_rotation (x : E) (hx : x ≠ 0) : ⇑(o.basis_right_angle_rotation x hx) = ![x, J x]
coe_basis_of_linear_independent_of_card_eq_finrank _ _
lemma
orientation.coe_basis_right_angle_rotation
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "coe_basis_of_linear_independent_of_card_eq_finrank" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
inner_mul_inner_add_area_form_mul_area_form' (a x : E) : ⟪a, x⟫ • innerₛₗ ℝ a + ω a x • ω a = ‖a‖ ^ 2 • innerₛₗ ℝ x
begin by_cases ha : a = 0, { simp [ha] }, apply (o.basis_right_angle_rotation a ha).ext, intros i, fin_cases i, { simp only [real_inner_self_eq_norm_sq, algebra.id.smul_eq_mul, innerₛₗ_apply, linear_map.smul_apply, linear_map.add_apply, matrix.cons_val_zero, o.coe_basis_right_angle_rotation, o.a...
lemma
orientation.inner_mul_inner_add_area_form_mul_area_form'
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "algebra.id.smul_eq_mul", "innerₛₗ", "innerₛₗ_apply", "linear_map.add_apply", "linear_map.smul_apply", "matrix.cons_val_one", "matrix.cons_val_zero", "matrix.head_cons", "real_inner_comm", "real_inner_self_eq_norm_sq", "ring" ]
For vectors `a x y : E`, the identity `⟪a, x⟫ * ⟪a, y⟫ + ω a x * ω a y = ‖a‖ ^ 2 * ⟪x, y⟫`. (See `orientation.inner_mul_inner_add_area_form_mul_area_form` for the "applied" form.)
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
inner_mul_inner_add_area_form_mul_area_form (a x y : E) : ⟪a, x⟫ * ⟪a, y⟫ + ω a x * ω a y = ‖a‖ ^ 2 * ⟪x, y⟫
congr_arg (λ f : E →ₗ[ℝ] ℝ, f y) (o.inner_mul_inner_add_area_form_mul_area_form' a x)
lemma
orientation.inner_mul_inner_add_area_form_mul_area_form
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[]
For vectors `a x y : E`, the identity `⟪a, x⟫ * ⟪a, y⟫ + ω a x * ω a y = ‖a‖ ^ 2 * ⟪x, y⟫`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
inner_sq_add_area_form_sq (a b : E) : ⟪a, b⟫ ^ 2 + ω a b ^ 2 = ‖a‖ ^ 2 * ‖b‖ ^ 2
by simpa [sq, real_inner_self_eq_norm_sq] using o.inner_mul_inner_add_area_form_mul_area_form a b b
lemma
orientation.inner_sq_add_area_form_sq
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "real_inner_self_eq_norm_sq" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
inner_mul_area_form_sub' (a x : E) : ⟪a, x⟫ • ω a - ω a x • innerₛₗ ℝ a = ‖a‖ ^ 2 • ω x
begin by_cases ha : a = 0, { simp [ha] }, apply (o.basis_right_angle_rotation a ha).ext, intros i, fin_cases i, { simp only [o.coe_basis_right_angle_rotation, o.area_form_apply_self, o.area_form_swap a x, real_inner_self_eq_norm_sq, algebra.id.smul_eq_mul, innerₛₗ_apply, linear_map.sub_apply, li...
lemma
orientation.inner_mul_area_form_sub'
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "algebra.id.smul_eq_mul", "innerₛₗ", "innerₛₗ_apply", "linear_map.smul_apply", "linear_map.sub_apply", "matrix.cons_val_one", "matrix.cons_val_zero", "matrix.head_cons", "real_inner_comm", "real_inner_self_eq_norm_sq", "ring" ]
For vectors `a x y : E`, the identity `⟪a, x⟫ * ω a y - ω a x * ⟪a, y⟫ = ‖a‖ ^ 2 * ω x y`. (See `orientation.inner_mul_area_form_sub` for the "applied" form.)
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
inner_mul_area_form_sub (a x y : E) : ⟪a, x⟫ * ω a y - ω a x * ⟪a, y⟫ = ‖a‖ ^ 2 * ω x y
congr_arg (λ f : E →ₗ[ℝ] ℝ, f y) (o.inner_mul_area_form_sub' a x)
lemma
orientation.inner_mul_area_form_sub
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[]
For vectors `a x y : E`, the identity `⟪a, x⟫ * ω a y - ω a x * ⟪a, y⟫ = ‖a‖ ^ 2 * ω x y`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
nonneg_inner_and_area_form_eq_zero_iff_same_ray (x y : E) : 0 ≤ ⟪x, y⟫ ∧ ω x y = 0 ↔ same_ray ℝ x y
begin by_cases hx : x = 0, { simp [hx] }, split, { let a : ℝ := (o.basis_right_angle_rotation x hx).repr y 0, let b : ℝ := (o.basis_right_angle_rotation x hx).repr y 1, suffices : 0 ≤ a * ‖x‖ ^ 2 ∧ b * ‖x‖ ^ 2 = 0 → same_ray ℝ x (a • x + b • J x), { rw ← (o.basis_right_angle_rotation x hx).sum_repr ...
lemma
orientation.nonneg_inner_and_area_form_eq_zero_iff_same_ray
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "algebra.id.smul_eq_mul", "eq_zero_of_ne_zero_of_mul_right_eq_zero", "fin.succ_zero_eq_one'", "fintype.univ_of_is_empty", "inner_add_left", "inner_add_right", "inner_smul_left", "inner_smul_right", "inner_zero_right", "linear_map.add_apply", "linear_map.map_smulₛₗ", "matrix.cons_val_one", "m...
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
kahler : E →ₗ[ℝ] E →ₗ[ℝ] ℂ
(linear_map.llcomp ℝ E ℝ ℂ complex.of_real_clm) ∘ₗ innerₛₗ ℝ + (linear_map.llcomp ℝ E ℝ ℂ ((linear_map.lsmul ℝ ℂ).flip complex.I)) ∘ₗ ω
def
orientation.kahler
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "complex.I", "complex.of_real_clm", "innerₛₗ", "linear_map.llcomp", "linear_map.lsmul" ]
A complex-valued real-bilinear map on an oriented real inner product space of dimension 2. Its real part is the inner product and its imaginary part is `orientation.area_form`. On `ℂ` with the standard orientation, `kahler w z = conj w * z`; see `complex.kahler`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
kahler_apply_apply (x y : E) : o.kahler x y = ⟪x, y⟫ + ω x y • complex.I
rfl
lemma
orientation.kahler_apply_apply
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "complex.I" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
kahler_swap (x y : E) : o.kahler x y = conj (o.kahler y x)
begin simp only [kahler_apply_apply], rw [real_inner_comm, area_form_swap], simp, end
lemma
orientation.kahler_swap
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "real_inner_comm" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
kahler_apply_self (x : E) : o.kahler x x = ‖x‖ ^ 2
by simp [kahler_apply_apply, real_inner_self_eq_norm_sq]
lemma
orientation.kahler_apply_self
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "real_inner_self_eq_norm_sq" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
kahler_right_angle_rotation_left (x y : E) : o.kahler (J x) y = - complex.I * o.kahler x y
begin simp only [o.area_form_right_angle_rotation_left, o.inner_right_angle_rotation_left, o.kahler_apply_apply, complex.of_real_neg, complex.real_smul], linear_combination ω x y * complex.I_sq, end
lemma
orientation.kahler_right_angle_rotation_left
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "complex.I", "complex.I_sq", "complex.of_real_neg", "complex.real_smul" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
kahler_right_angle_rotation_right (x y : E) : o.kahler x (J y) = complex.I * o.kahler x y
begin simp only [o.area_form_right_angle_rotation_right, o.inner_right_angle_rotation_right, o.kahler_apply_apply, complex.of_real_neg, complex.real_smul], linear_combination - ω x y * complex.I_sq, end
lemma
orientation.kahler_right_angle_rotation_right
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "complex.I", "complex.I_sq", "complex.of_real_neg", "complex.real_smul" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
kahler_comp_right_angle_rotation (x y : E) : o.kahler (J x) (J y) = o.kahler x y
begin simp only [kahler_right_angle_rotation_left, kahler_right_angle_rotation_right], linear_combination - o.kahler x y * complex.I_sq, end
lemma
orientation.kahler_comp_right_angle_rotation
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "complex.I_sq" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
kahler_neg_orientation (x y : E) : (-o).kahler x y = conj (o.kahler x y)
by simp [kahler_apply_apply]
lemma
orientation.kahler_neg_orientation
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
kahler_mul (a x y : E) : o.kahler x a * o.kahler a y = ‖a‖ ^ 2 * o.kahler x y
begin transitivity (↑(‖a‖ ^ 2) : ℂ) * o.kahler x y, { ext, { simp only [o.kahler_apply_apply, complex.add_im, complex.add_re, complex.I_im, complex.I_re, complex.mul_im, complex.mul_re, complex.of_real_im, complex.of_real_re, complex.real_smul], rw [real_inner_comm a x, o.area_form_swap x a], ...
lemma
orientation.kahler_mul
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "complex.I_im", "complex.I_re", "complex.add_im", "complex.add_re", "complex.mul_im", "complex.mul_re", "complex.of_real_im", "complex.of_real_re", "complex.real_smul", "real_inner_comm" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
norm_sq_kahler (x y : E) : complex.norm_sq (o.kahler x y) = ‖x‖ ^ 2 * ‖y‖ ^ 2
by simpa [kahler_apply_apply, complex.norm_sq, sq] using o.inner_sq_add_area_form_sq x y
lemma
orientation.norm_sq_kahler
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "complex.norm_sq" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
abs_kahler (x y : E) : complex.abs (o.kahler x y) = ‖x‖ * ‖y‖
begin rw [← sq_eq_sq, complex.sq_abs], { linear_combination o.norm_sq_kahler x y }, { positivity }, { positivity } end
lemma
orientation.abs_kahler
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "complex.abs", "complex.sq_abs", "sq_eq_sq" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
norm_kahler (x y : E) : ‖o.kahler x y‖ = ‖x‖ * ‖y‖
by simpa using o.abs_kahler x y
lemma
orientation.norm_kahler
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
eq_zero_or_eq_zero_of_kahler_eq_zero {x y : E} (hx : o.kahler x y = 0) : x = 0 ∨ y = 0
begin have : ‖x‖ * ‖y‖ = 0 := by simpa [hx] using (o.norm_kahler x y).symm, cases eq_zero_or_eq_zero_of_mul_eq_zero this with h h, { left, simpa using h }, { right, simpa using h }, end
lemma
orientation.eq_zero_or_eq_zero_of_kahler_eq_zero
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
kahler_eq_zero_iff (x y : E) : o.kahler x y = 0 ↔ x = 0 ∨ y = 0
begin refine ⟨o.eq_zero_or_eq_zero_of_kahler_eq_zero, _⟩, rintros (rfl | rfl); simp, end
lemma
orientation.kahler_eq_zero_iff
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
kahler_ne_zero {x y : E} (hx : x ≠ 0) (hy : y ≠ 0) : o.kahler x y ≠ 0
begin apply mt o.eq_zero_or_eq_zero_of_kahler_eq_zero, tauto, end
lemma
orientation.kahler_ne_zero
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
kahler_ne_zero_iff (x y : E) : o.kahler x y ≠ 0 ↔ x ≠ 0 ∧ y ≠ 0
begin refine ⟨_, λ h, o.kahler_ne_zero h.1 h.2⟩, contrapose, simp only [not_and_distrib, not_not, kahler_apply_apply, complex.real_smul], rintros (rfl | rfl); simp, end
lemma
orientation.kahler_ne_zero_iff
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "complex.real_smul", "not_and_distrib", "not_not" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
kahler_map {F : Type*} [normed_add_comm_group F] [inner_product_space ℝ F] [fact (finrank ℝ F = 2)] (φ : E ≃ₗᵢ[ℝ] F) (x y : F) : (orientation.map (fin 2) φ.to_linear_equiv o).kahler x y = o.kahler (φ.symm x) (φ.symm y)
by simp [kahler_apply_apply, area_form_map]
lemma
orientation.kahler_map
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "fact", "inner_product_space", "normed_add_comm_group", "orientation.map" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
kahler_comp_linear_isometry_equiv (φ : E ≃ₗᵢ[ℝ] E) (hφ : 0 < (φ.to_linear_equiv : E →ₗ[ℝ] E).det) (x y : E) : o.kahler (φ x) (φ y) = o.kahler x y
by simp [kahler_apply_apply, o.area_form_comp_linear_isometry_equiv φ hφ]
lemma
orientation.kahler_comp_linear_isometry_equiv
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[]
The bilinear map `kahler` is invariant under pullback by a positively-oriented isometric automorphism.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
area_form (w z : ℂ) : complex.orientation.area_form w z = (conj w * z).im
begin let o := complex.orientation, simp only [o.area_form_to_volume_form, o.volume_form_robust complex.orthonormal_basis_one_I rfl, basis.det_apply, matrix.det_fin_two, basis.to_matrix_apply,to_basis_orthonormal_basis_one_I, matrix.cons_val_zero, coe_basis_one_I_repr, matrix.cons_val_one, matrix.head_cons,...
lemma
complex.area_form
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "basis.det_apply", "basis.to_matrix_apply", "complex.orientation", "complex.orthonormal_basis_one_I", "matrix.cons_val_one", "matrix.cons_val_zero", "matrix.det_fin_two", "matrix.head_cons", "ring" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right_angle_rotation (z : ℂ) : complex.orientation.right_angle_rotation z = I * z
begin apply ext_inner_right ℝ, intros w, rw orientation.inner_right_angle_rotation_left, simp only [complex.area_form, complex.inner, mul_re, mul_im, conj_re, conj_im, map_mul, conj_I, neg_re, neg_im, I_re, I_im], ring, end
lemma
complex.right_angle_rotation
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "complex.area_form", "complex.inner", "ext_inner_right", "map_mul", "orientation.inner_right_angle_rotation_left", "ring" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
kahler (w z : ℂ) : complex.orientation.kahler w z = conj w * z
begin rw orientation.kahler_apply_apply, ext1; simp, end
lemma
complex.kahler
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "orientation.kahler_apply_apply" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
area_form_map_complex (f : E ≃ₗᵢ[ℝ] ℂ) (hf : (orientation.map (fin 2) f.to_linear_equiv o) = complex.orientation) (x y : E) : ω x y = (conj (f x) * f y).im
begin rw [← complex.area_form, ← hf, o.area_form_map], simp, end
lemma
orientation.area_form_map_complex
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "complex.area_form", "complex.orientation", "orientation.map" ]
The area form on an oriented real inner product space of dimension 2 can be evaluated in terms of a complex-number representation of the space.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right_angle_rotation_map_complex (f : E ≃ₗᵢ[ℝ] ℂ) (hf : (orientation.map (fin 2) f.to_linear_equiv o) = complex.orientation) (x : E) : f (J x) = I * f x
begin rw [← complex.right_angle_rotation, ← hf, o.right_angle_rotation_map], simp, end
lemma
orientation.right_angle_rotation_map_complex
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "complex.orientation", "complex.right_angle_rotation", "orientation.map" ]
The rotation by 90 degrees on an oriented real inner product space of dimension 2 can be evaluated in terms of a complex-number representation of the space.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
kahler_map_complex (f : E ≃ₗᵢ[ℝ] ℂ) (hf : (orientation.map (fin 2) f.to_linear_equiv o) = complex.orientation) (x y : E) : o.kahler x y = conj (f x) * f y
begin rw [← complex.kahler, ← hf, o.kahler_map], simp, end
lemma
orientation.kahler_map_complex
analysis.inner_product_space
src/analysis/inner_product_space/two_dim.lean
[ "analysis.inner_product_space.dual", "analysis.inner_product_space.orientation", "data.complex.orientation", "tactic.linear_combination" ]
[ "complex.kahler", "complex.orientation", "orientation.map" ]
The Kahler form on an oriented real inner product space of dimension 2 can be evaluated in terms of a complex-number representation of the space.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
nhds_basis_abs_convex : (𝓝 (0 : E)).has_basis (λ (s : set E), s ∈ 𝓝 (0 : E) ∧ balanced 𝕜 s ∧ convex ℝ s) id
begin refine (locally_convex_space.convex_basis_zero ℝ E).to_has_basis (λ s hs, _) (λ s hs, ⟨s, ⟨hs.1, hs.2.2⟩, rfl.subset⟩), refine ⟨convex_hull ℝ (balanced_core 𝕜 s), _, convex_hull_min (balanced_core_subset s) hs.2⟩, refine ⟨filter.mem_of_superset (balanced_core_mem_nhds_zero hs.1) (subset_convex_hull ℝ _...
lemma
nhds_basis_abs_convex
analysis.locally_convex
src/analysis/locally_convex/abs_convex.lean
[ "analysis.locally_convex.balanced_core_hull", "analysis.locally_convex.with_seminorms", "analysis.convex.gauge" ]
[ "balanced", "balanced_core", "balanced_core_balanced", "balanced_core_mem_nhds_zero", "balanced_core_subset", "convex", "convex_convex_hull", "convex_hull_min", "locally_convex_space.convex_basis_zero", "subset_convex_hull" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
nhds_basis_abs_convex_open : (𝓝 (0 : E)).has_basis (λ (s : set E), (0 : E) ∈ s ∧ is_open s ∧ balanced 𝕜 s ∧ convex ℝ s) id
begin refine (nhds_basis_abs_convex 𝕜 E).to_has_basis _ _, { rintros s ⟨hs_nhds, hs_balanced, hs_convex⟩, refine ⟨interior s, _, interior_subset⟩, exact ⟨mem_interior_iff_mem_nhds.mpr hs_nhds, is_open_interior, hs_balanced.interior (mem_interior_iff_mem_nhds.mpr hs_nhds), hs_convex.interior⟩ }, rin...
lemma
nhds_basis_abs_convex_open
analysis.locally_convex
src/analysis/locally_convex/abs_convex.lean
[ "analysis.locally_convex.balanced_core_hull", "analysis.locally_convex.with_seminorms", "analysis.convex.gauge" ]
[ "balanced", "convex", "is_open", "is_open_interior", "nhds_basis_abs_convex" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
abs_convex_open_sets
{ s : set E // (0 : E) ∈ s ∧ is_open s ∧ balanced 𝕜 s ∧ convex ℝ s }
def
abs_convex_open_sets
analysis.locally_convex
src/analysis/locally_convex/abs_convex.lean
[ "analysis.locally_convex.balanced_core_hull", "analysis.locally_convex.with_seminorms", "analysis.convex.gauge" ]
[ "balanced", "convex", "is_open" ]
The type of absolutely convex open sets.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
abs_convex_open_sets.has_coe : has_coe (abs_convex_open_sets 𝕜 E) (set E)
⟨subtype.val⟩
instance
abs_convex_open_sets.has_coe
analysis.locally_convex
src/analysis/locally_convex/abs_convex.lean
[ "analysis.locally_convex.balanced_core_hull", "analysis.locally_convex.with_seminorms", "analysis.convex.gauge" ]
[ "abs_convex_open_sets" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_zero_mem (s : abs_convex_open_sets 𝕜 E) : (0 : E) ∈ (s : set E)
s.2.1
lemma
abs_convex_open_sets.coe_zero_mem
analysis.locally_convex
src/analysis/locally_convex/abs_convex.lean
[ "analysis.locally_convex.balanced_core_hull", "analysis.locally_convex.with_seminorms", "analysis.convex.gauge" ]
[ "abs_convex_open_sets" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_is_open (s : abs_convex_open_sets 𝕜 E) : is_open (s : set E)
s.2.2.1
lemma
abs_convex_open_sets.coe_is_open
analysis.locally_convex
src/analysis/locally_convex/abs_convex.lean
[ "analysis.locally_convex.balanced_core_hull", "analysis.locally_convex.with_seminorms", "analysis.convex.gauge" ]
[ "abs_convex_open_sets", "is_open" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_nhds (s : abs_convex_open_sets 𝕜 E) : (s : set E) ∈ 𝓝 (0 : E)
s.coe_is_open.mem_nhds s.coe_zero_mem
lemma
abs_convex_open_sets.coe_nhds
analysis.locally_convex
src/analysis/locally_convex/abs_convex.lean
[ "analysis.locally_convex.balanced_core_hull", "analysis.locally_convex.with_seminorms", "analysis.convex.gauge" ]
[ "abs_convex_open_sets" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_balanced (s : abs_convex_open_sets 𝕜 E) : balanced 𝕜 (s : set E)
s.2.2.2.1
lemma
abs_convex_open_sets.coe_balanced
analysis.locally_convex
src/analysis/locally_convex/abs_convex.lean
[ "analysis.locally_convex.balanced_core_hull", "analysis.locally_convex.with_seminorms", "analysis.convex.gauge" ]
[ "abs_convex_open_sets", "balanced" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_convex (s : abs_convex_open_sets 𝕜 E) : convex ℝ (s : set E)
s.2.2.2.2
lemma
abs_convex_open_sets.coe_convex
analysis.locally_convex
src/analysis/locally_convex/abs_convex.lean
[ "analysis.locally_convex.balanced_core_hull", "analysis.locally_convex.with_seminorms", "analysis.convex.gauge" ]
[ "abs_convex_open_sets", "convex" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
gauge_seminorm_family : seminorm_family 𝕜 E (abs_convex_open_sets 𝕜 E)
λ s, gauge_seminorm s.coe_balanced s.coe_convex (absorbent_nhds_zero s.coe_nhds)
def
gauge_seminorm_family
analysis.locally_convex
src/analysis/locally_convex/abs_convex.lean
[ "analysis.locally_convex.balanced_core_hull", "analysis.locally_convex.with_seminorms", "analysis.convex.gauge" ]
[ "abs_convex_open_sets", "absorbent_nhds_zero", "gauge_seminorm", "seminorm_family" ]
The family of seminorms defined by the gauges of absolute convex open sets.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
gauge_seminorm_family_ball (s : abs_convex_open_sets 𝕜 E) : (gauge_seminorm_family 𝕜 E s).ball 0 1 = (s : set E)
begin dunfold gauge_seminorm_family, rw seminorm.ball_zero_eq, simp_rw gauge_seminorm_to_fun, exact gauge_lt_one_eq_self_of_open s.coe_convex s.coe_zero_mem s.coe_is_open, end
lemma
gauge_seminorm_family_ball
analysis.locally_convex
src/analysis/locally_convex/abs_convex.lean
[ "analysis.locally_convex.balanced_core_hull", "analysis.locally_convex.with_seminorms", "analysis.convex.gauge" ]
[ "abs_convex_open_sets", "gauge_lt_one_eq_self_of_open", "gauge_seminorm_family", "seminorm.ball_zero_eq" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
with_gauge_seminorm_family : with_seminorms (gauge_seminorm_family 𝕜 E)
begin refine seminorm_family.with_seminorms_of_has_basis _ _, refine (nhds_basis_abs_convex_open 𝕜 E).to_has_basis (λ s hs, _) (λ s hs, _), { refine ⟨s, ⟨_, rfl.subset⟩⟩, convert (gauge_seminorm_family _ _).basis_sets_singleton_mem ⟨s, hs⟩ one_pos, rw [gauge_seminorm_family_ball, subtype.coe_mk] }, ref...
lemma
with_gauge_seminorm_family
analysis.locally_convex
src/analysis/locally_convex/abs_convex.lean
[ "analysis.locally_convex.balanced_core_hull", "analysis.locally_convex.with_seminorms", "analysis.convex.gauge" ]
[ "abs_of_pos", "balanced_Inter₂", "convex_Inter₂", "gauge_seminorm_family", "gauge_seminorm_family_ball", "is_open_bInter", "nhds_basis_abs_convex_open", "seminorm.balanced_ball_zero", "seminorm.ball_finset_sup_eq_Inter", "seminorm.convex_ball", "seminorm.mem_ball_zero", "seminorm.smul_ball_zer...
The topology of a locally convex space is induced by the gauge seminorm family.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
balanced_core (s : set E)
⋃₀ {t : set E | balanced 𝕜 t ∧ t ⊆ s}
def
balanced_core
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced" ]
The largest balanced subset of `s`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
balanced_core_aux (s : set E)
⋂ (r : 𝕜) (hr : 1 ≤ ‖r‖), r • s
def
balanced_core_aux
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[]
Helper definition to prove `balanced_core_eq_Inter`
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
balanced_hull (s : set E)
⋃ (r : 𝕜) (hr : ‖r‖ ≤ 1), r • s
def
balanced_hull
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[]
The smallest balanced superset of `s`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
balanced_core_subset (s : set E) : balanced_core 𝕜 s ⊆ s
sUnion_subset $ λ t ht, ht.2
lemma
balanced_core_subset
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced_core" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
balanced_core_empty : balanced_core 𝕜 (∅ : set E) = ∅
eq_empty_of_subset_empty (balanced_core_subset _)
lemma
balanced_core_empty
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced_core", "balanced_core_subset" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mem_balanced_core_iff : x ∈ balanced_core 𝕜 s ↔ ∃ t, balanced 𝕜 t ∧ t ⊆ s ∧ x ∈ t
by simp_rw [balanced_core, mem_sUnion, mem_set_of_eq, exists_prop, and_assoc]
lemma
mem_balanced_core_iff
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced", "balanced_core", "exists_prop" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
smul_balanced_core_subset (s : set E) {a : 𝕜} (ha : ‖a‖ ≤ 1) : a • balanced_core 𝕜 s ⊆ balanced_core 𝕜 s
begin rintro x ⟨y, hy, rfl⟩, rw mem_balanced_core_iff at hy, rcases hy with ⟨t, ht1, ht2, hy⟩, exact ⟨t, ⟨ht1, ht2⟩, ht1 a ha (smul_mem_smul_set hy)⟩, end
lemma
smul_balanced_core_subset
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced_core", "mem_balanced_core_iff" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
balanced_core_balanced (s : set E) : balanced 𝕜 (balanced_core 𝕜 s)
λ _, smul_balanced_core_subset s
lemma
balanced_core_balanced
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced", "balanced_core", "smul_balanced_core_subset" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
balanced.subset_core_of_subset (hs : balanced 𝕜 s) (h : s ⊆ t) : s ⊆ balanced_core 𝕜 t
subset_sUnion_of_mem ⟨hs, h⟩
lemma
balanced.subset_core_of_subset
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced", "balanced_core" ]
The balanced core of `t` is maximal in the sense that it contains any balanced subset `s` of `t`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mem_balanced_core_aux_iff : x ∈ balanced_core_aux 𝕜 s ↔ ∀ r : 𝕜, 1 ≤ ‖r‖ → x ∈ r • s
mem_Inter₂
lemma
mem_balanced_core_aux_iff
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced_core_aux" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mem_balanced_hull_iff : x ∈ balanced_hull 𝕜 s ↔ ∃ (r : 𝕜) (hr : ‖r‖ ≤ 1), x ∈ r • s
mem_Union₂
lemma
mem_balanced_hull_iff
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced_hull" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
balanced.hull_subset_of_subset (ht : balanced 𝕜 t) (h : s ⊆ t) : balanced_hull 𝕜 s ⊆ t
λ x hx, by { obtain ⟨r, hr, y, hy, rfl⟩ := mem_balanced_hull_iff.1 hx, exact ht.smul_mem hr (h hy) }
lemma
balanced.hull_subset_of_subset
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced", "balanced_hull" ]
The balanced hull of `s` is minimal in the sense that it is contained in any balanced superset `t` of `s`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
balanced_core_zero_mem (hs : (0 : E) ∈ s) : (0 : E) ∈ balanced_core 𝕜 s
mem_balanced_core_iff.2 ⟨0, balanced_zero, zero_subset.2 hs, zero_mem_zero⟩
lemma
balanced_core_zero_mem
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced_core", "balanced_zero" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
balanced_core_nonempty_iff : (balanced_core 𝕜 s).nonempty ↔ (0 : E) ∈ s
⟨λ h, zero_subset.1 $ (zero_smul_set h).superset.trans $ (balanced_core_balanced s (0 : 𝕜) $ norm_zero.trans_le zero_le_one).trans $ balanced_core_subset _, λ h, ⟨0, balanced_core_zero_mem h⟩⟩
lemma
balanced_core_nonempty_iff
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced_core", "balanced_core_balanced", "balanced_core_subset", "balanced_core_zero_mem", "zero_le_one" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
subset_balanced_hull [norm_one_class 𝕜] {s : set E} : s ⊆ balanced_hull 𝕜 s
λ _ hx, mem_balanced_hull_iff.2 ⟨1, norm_one.le, _, hx, one_smul _ _⟩
lemma
subset_balanced_hull
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced_hull", "norm_one_class", "one_smul" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
balanced_hull.balanced (s : set E) : balanced 𝕜 (balanced_hull 𝕜 s)
begin intros a ha, simp_rw [balanced_hull, smul_set_Union₂, subset_def, mem_Union₂], rintro x ⟨r, hr, hx⟩, rw ←smul_assoc at hx, exact ⟨a • r, (semi_normed_ring.norm_mul _ _).trans (mul_le_one ha (norm_nonneg r) hr), hx⟩, end
lemma
balanced_hull.balanced
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced", "balanced_hull", "mul_le_one" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
balanced_core_aux_empty : balanced_core_aux 𝕜 (∅ : set E) = ∅
begin simp_rw [balanced_core_aux, Inter₂_eq_empty_iff, smul_set_empty], exact λ _, ⟨1, norm_one.ge, not_mem_empty _⟩, end
lemma
balanced_core_aux_empty
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced_core_aux" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
balanced_core_aux_subset (s : set E) : balanced_core_aux 𝕜 s ⊆ s
λ x hx, by simpa only [one_smul] using mem_balanced_core_aux_iff.1 hx 1 norm_one.ge
lemma
balanced_core_aux_subset
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced_core_aux", "one_smul" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
balanced_core_aux_balanced (h0 : (0 : E) ∈ balanced_core_aux 𝕜 s): balanced 𝕜 (balanced_core_aux 𝕜 s)
begin rintro a ha x ⟨y, hy, rfl⟩, obtain rfl | h := eq_or_ne a 0, { rwa zero_smul }, rw mem_balanced_core_aux_iff at ⊢ hy, intros r hr, have h'' : 1 ≤ ‖a⁻¹ • r‖, { rw [norm_smul, norm_inv], exact one_le_mul_of_one_le_of_one_le (one_le_inv (norm_pos_iff.mpr h) ha) hr }, have h' := hy (a⁻¹ • r) h'', ...
lemma
balanced_core_aux_balanced
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced", "balanced_core_aux", "eq_or_ne", "mem_balanced_core_aux_iff", "norm_inv", "norm_smul", "one_le_inv", "one_le_mul_of_one_le_of_one_le", "smul_assoc", "zero_smul" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
balanced_core_aux_maximal (h : t ⊆ s) (ht : balanced 𝕜 t) : t ⊆ balanced_core_aux 𝕜 s
begin refine λ x hx, mem_balanced_core_aux_iff.2 (λ r hr, _), rw mem_smul_set_iff_inv_smul_mem₀ (norm_pos_iff.mp $ zero_lt_one.trans_le hr), refine h (ht.smul_mem _ hx), rw norm_inv, exact inv_le_one hr, end
lemma
balanced_core_aux_maximal
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced", "balanced_core_aux", "inv_le_one", "norm_inv" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
balanced_core_subset_balanced_core_aux : balanced_core 𝕜 s ⊆ balanced_core_aux 𝕜 s
balanced_core_aux_maximal (balanced_core_subset s) (balanced_core_balanced s)
lemma
balanced_core_subset_balanced_core_aux
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced_core", "balanced_core_aux", "balanced_core_aux_maximal", "balanced_core_balanced", "balanced_core_subset" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
balanced_core_eq_Inter (hs : (0 : E) ∈ s) : balanced_core 𝕜 s = ⋂ (r : 𝕜) (hr : 1 ≤ ‖r‖), r • s
begin refine balanced_core_subset_balanced_core_aux.antisymm _, refine (balanced_core_aux_balanced _).subset_core_of_subset (balanced_core_aux_subset s), exact balanced_core_subset_balanced_core_aux (balanced_core_zero_mem hs), end
lemma
balanced_core_eq_Inter
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced_core", "balanced_core_aux_balanced", "balanced_core_aux_subset", "balanced_core_subset_balanced_core_aux", "balanced_core_zero_mem" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
subset_balanced_core (ht : (0 : E) ∈ t) (hst : ∀ (a : 𝕜) (ha : ‖a‖ ≤ 1), a • s ⊆ t) : s ⊆ balanced_core 𝕜 t
begin rw balanced_core_eq_Inter ht, refine subset_Inter₂ (λ a ha, _), rw ←smul_inv_smul₀ (norm_pos_iff.mp $ zero_lt_one.trans_le ha) s, refine smul_set_mono (hst _ _), rw [norm_inv], exact inv_le_one ha, end
lemma
subset_balanced_core
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced_core", "balanced_core_eq_Inter", "inv_le_one", "norm_inv" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
is_closed.balanced_core (hU : is_closed U) : is_closed (balanced_core 𝕜 U)
begin by_cases h : (0 : E) ∈ U, { rw balanced_core_eq_Inter h, refine is_closed_Inter (λ a, _), refine is_closed_Inter (λ ha, _), have ha' := lt_of_lt_of_le zero_lt_one ha, rw norm_pos_iff at ha', refine is_closed_map_smul_of_ne_zero ha' U hU }, convert is_closed_empty, contrapose! h, exac...
lemma
is_closed.balanced_core
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced_core", "balanced_core_eq_Inter", "is_closed", "is_closed_Inter", "is_closed_empty", "is_closed_map_smul_of_ne_zero", "zero_lt_one" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
balanced_core_mem_nhds_zero (hU : U ∈ 𝓝 (0 : E)) : balanced_core 𝕜 U ∈ 𝓝 (0 : E)
begin -- Getting neighborhoods of the origin for `0 : 𝕜` and `0 : E` obtain ⟨r, V, hr, hV, hrVU⟩ : ∃ (r : ℝ) (V : set E), 0 < r ∧ V ∈ 𝓝 (0 : E) ∧ ∀ (c : 𝕜) (y : E), ‖c‖ < r → y ∈ V → c • y ∈ U, { have h : filter.tendsto (λ (x : 𝕜 × E), x.fst • x.snd) (𝓝 (0,0)) (𝓝 0), from continuous_smul.tendsto' ...
lemma
balanced_core_mem_nhds_zero
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "and_imp", "balanced_core", "exists_prop", "filter.mem_of_superset", "filter.tendsto", "mem_of_mem_nhds", "mul_lt_mul'", "norm_mul", "normed_field.exists_norm_lt", "one_mul", "prod.exists'", "prod.forall'", "set_smul_mem_nhds_zero_iff", "smul_smul", "smul_zero", "subset_balanced_core" ...
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
nhds_basis_balanced : (𝓝 (0 : E)).has_basis (λ (s : set E), s ∈ 𝓝 (0 : E) ∧ balanced 𝕜 s) id
filter.has_basis_self.mpr (λ s hs, ⟨balanced_core 𝕜 s, balanced_core_mem_nhds_zero hs, balanced_core_balanced s, balanced_core_subset s⟩)
lemma
nhds_basis_balanced
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced", "balanced_core_balanced", "balanced_core_mem_nhds_zero", "balanced_core_subset" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
nhds_basis_closed_balanced [regular_space E] : (𝓝 (0 : E)).has_basis (λ (s : set E), s ∈ 𝓝 (0 : E) ∧ is_closed s ∧ balanced 𝕜 s) id
begin refine (closed_nhds_basis 0).to_has_basis (λ s hs, _) (λ s hs, ⟨s, ⟨hs.1, hs.2.1⟩, rfl.subset⟩), refine ⟨balanced_core 𝕜 s, ⟨balanced_core_mem_nhds_zero hs.1, _⟩, balanced_core_subset s⟩, exact ⟨hs.2.balanced_core, balanced_core_balanced s⟩ end
lemma
nhds_basis_closed_balanced
analysis.locally_convex
src/analysis/locally_convex/balanced_core_hull.lean
[ "analysis.locally_convex.basic" ]
[ "balanced", "balanced_core_balanced", "balanced_core_subset", "closed_nhds_basis", "is_closed", "regular_space" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
absorbs (A B : set E)
∃ r, 0 < r ∧ ∀ a : 𝕜, r ≤ ‖a‖ → B ⊆ a • A
def
absorbs
analysis.locally_convex
src/analysis/locally_convex/basic.lean
[ "analysis.convex.basic", "analysis.convex.hull", "analysis.normed_space.basic" ]
[]
A set `A` absorbs another set `B` if `B` is contained in all scalings of `A` by elements of sufficiently large norm.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
absorbs_empty {s : set E}: absorbs 𝕜 s (∅ : set E)
⟨1, one_pos, λ a ha, set.empty_subset _⟩
lemma
absorbs_empty
analysis.locally_convex
src/analysis/locally_convex/basic.lean
[ "analysis.convex.basic", "analysis.convex.hull", "analysis.normed_space.basic" ]
[ "absorbs", "set.empty_subset" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
absorbs.mono (hs : absorbs 𝕜 s u) (hst : s ⊆ t) (hvu : v ⊆ u) : absorbs 𝕜 t v
let ⟨r, hr, h⟩ := hs in ⟨r, hr, λ a ha, hvu.trans $ (h _ ha).trans $ smul_set_mono hst⟩
lemma
absorbs.mono
analysis.locally_convex
src/analysis/locally_convex/basic.lean
[ "analysis.convex.basic", "analysis.convex.hull", "analysis.normed_space.basic" ]
[ "absorbs" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
absorbs.mono_left (hs : absorbs 𝕜 s u) (h : s ⊆ t) : absorbs 𝕜 t u
hs.mono h subset.rfl
lemma
absorbs.mono_left
analysis.locally_convex
src/analysis/locally_convex/basic.lean
[ "analysis.convex.basic", "analysis.convex.hull", "analysis.normed_space.basic" ]
[ "absorbs" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
absorbs.mono_right (hs : absorbs 𝕜 s u) (h : v ⊆ u) : absorbs 𝕜 s v
hs.mono subset.rfl h
lemma
absorbs.mono_right
analysis.locally_convex
src/analysis/locally_convex/basic.lean
[ "analysis.convex.basic", "analysis.convex.hull", "analysis.normed_space.basic" ]
[ "absorbs" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83