statement
stringlengths
1
2.88k
proof
stringlengths
0
13.9k
type
stringclasses
10 values
symbolic_name
stringlengths
1
131
library
stringclasses
417 values
filename
stringlengths
17
80
imports
listlengths
0
16
deps
listlengths
0
64
docstring
stringlengths
0
10.2k
source_url
stringclasses
1 value
commit
stringclasses
1 value
pos_iff_pos_of_mul_pos [pos_mul_reflect_lt α] [mul_pos_reflect_lt α] (hab : 0 < a * b) : 0 < a ↔ 0 < b
⟨pos_of_mul_pos_right hab ∘ le_of_lt, pos_of_mul_pos_left hab ∘ le_of_lt⟩
lemma
pos_iff_pos_of_mul_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_pos_reflect_lt", "pos_mul_reflect_lt", "pos_of_mul_pos_left" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_le_mul_of_le_of_le [pos_mul_mono α] [mul_pos_mono α] (h₁ : a ≤ b) (h₂ : c ≤ d) (a0 : 0 ≤ a) (d0 : 0 ≤ d) : a * c ≤ b * d
(mul_le_mul_of_nonneg_left h₂ a0).trans $ mul_le_mul_of_nonneg_right h₁ d0
lemma
mul_le_mul_of_le_of_le
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul_of_nonneg_left", "mul_le_mul_of_nonneg_right", "mul_pos_mono", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_le_mul [pos_mul_mono α] [mul_pos_mono α] (h₁ : a ≤ b) (h₂ : c ≤ d) (c0 : 0 ≤ c) (b0 : 0 ≤ b) : a * c ≤ b * d
(mul_le_mul_of_nonneg_right h₁ c0).trans $ mul_le_mul_of_nonneg_left h₂ b0
lemma
mul_le_mul
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul_of_nonneg_left", "mul_le_mul_of_nonneg_right", "mul_pos_mono", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_self_le_mul_self [pos_mul_mono α] [mul_pos_mono α] (ha : 0 ≤ a) (hab : a ≤ b) : a * a ≤ b * b
mul_le_mul hab hab ha $ ha.trans hab
lemma
mul_self_le_mul_self
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul", "mul_pos_mono", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_le_of_mul_le_of_nonneg_left [pos_mul_mono α] (h : a * b ≤ c) (hle : d ≤ b) (a0 : 0 ≤ a) : a * d ≤ c
(mul_le_mul_of_nonneg_left hle a0).trans h
lemma
mul_le_of_mul_le_of_nonneg_left
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul_of_nonneg_left", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
le_mul_of_le_mul_of_nonneg_left [pos_mul_mono α] (h : a ≤ b * c) (hle : c ≤ d) (b0 : 0 ≤ b) : a ≤ b * d
h.trans (mul_le_mul_of_nonneg_left hle b0)
lemma
le_mul_of_le_mul_of_nonneg_left
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul_of_nonneg_left", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_le_of_mul_le_of_nonneg_right [mul_pos_mono α] (h : a * b ≤ c) (hle : d ≤ a) (b0 : 0 ≤ b) : d * b ≤ c
(mul_le_mul_of_nonneg_right hle b0).trans h
lemma
mul_le_of_mul_le_of_nonneg_right
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul_of_nonneg_right", "mul_pos_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
le_mul_of_le_mul_of_nonneg_right [mul_pos_mono α] (h : a ≤ b * c) (hle : b ≤ d) (c0 : 0 ≤ c) : a ≤ d * c
h.trans (mul_le_mul_of_nonneg_right hle c0)
lemma
le_mul_of_le_mul_of_nonneg_right
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul_of_nonneg_right", "mul_pos_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
pos_mul_mono_iff_covariant_pos : pos_mul_mono α ↔ covariant_class α>0 α (λ x y, x * y) (≤)
⟨@pos_mul_mono.to_covariant_class_pos_mul_le _ _ _ _, λ h, ⟨λ a b c h, begin obtain ha | ha := a.prop.eq_or_gt, { simp only [ha, zero_mul] }, { exactI @covariant_class.elim α>0 α (λ x y, x * y) (≤) _ ⟨_, ha⟩ _ _ h } end⟩⟩
lemma
pos_mul_mono_iff_covariant_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "covariant_class", "pos_mul_mono", "pos_mul_mono.to_covariant_class_pos_mul_le", "zero_mul" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_pos_mono_iff_covariant_pos : mul_pos_mono α ↔ covariant_class α>0 α (λ x y, y * x) (≤)
⟨@mul_pos_mono.to_covariant_class_pos_mul_le _ _ _ _, λ h, ⟨λ a b c h, begin obtain ha | ha := a.prop.eq_or_gt, { simp only [ha, mul_zero] }, { exactI @covariant_class.elim α>0 α (λ x y, y * x) (≤) _ ⟨_, ha⟩ _ _ h } end⟩⟩
lemma
mul_pos_mono_iff_covariant_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "covariant_class", "mul_pos_mono", "mul_pos_mono.to_covariant_class_pos_mul_le", "mul_zero" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
pos_mul_reflect_lt_iff_contravariant_pos : pos_mul_reflect_lt α ↔ contravariant_class α>0 α (λ x y, x * y) (<)
⟨@pos_mul_reflect_lt.to_contravariant_class_pos_mul_lt _ _ _ _, λ h, ⟨λ a b c h, begin obtain ha | ha := a.prop.eq_or_gt, { simpa [ha] using h }, { exactI (@contravariant_class.elim α>0 α (λ x y, x * y) (<) _ ⟨_, ha⟩ _ _ h) } end⟩⟩
lemma
pos_mul_reflect_lt_iff_contravariant_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "contravariant_class", "pos_mul_reflect_lt", "pos_mul_reflect_lt.to_contravariant_class_pos_mul_lt" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_pos_reflect_lt_iff_contravariant_pos : mul_pos_reflect_lt α ↔ contravariant_class α>0 α (λ x y, y * x) (<)
⟨@mul_pos_reflect_lt.to_contravariant_class_pos_mul_lt _ _ _ _, λ h, ⟨λ a b c h, begin obtain ha | ha := a.prop.eq_or_gt, { simpa [ha] using h }, { exactI (@contravariant_class.elim α>0 α (λ x y, y * x) (<) _ ⟨_, ha⟩ _ _ h) } end⟩⟩
lemma
mul_pos_reflect_lt_iff_contravariant_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "contravariant_class", "mul_pos_reflect_lt", "mul_pos_reflect_lt.to_contravariant_class_pos_mul_lt" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
pos_mul_strict_mono.to_pos_mul_mono [pos_mul_strict_mono α] : pos_mul_mono α
pos_mul_mono_iff_covariant_pos.2 $ ⟨λ a, strict_mono.monotone $ @covariant_class.elim _ _ _ _ _ _⟩
instance
pos_mul_strict_mono.to_pos_mul_mono
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "pos_mul_mono", "pos_mul_strict_mono", "strict_mono.monotone" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_pos_strict_mono.to_mul_pos_mono [mul_pos_strict_mono α] : mul_pos_mono α
mul_pos_mono_iff_covariant_pos.2 $ ⟨λ a, strict_mono.monotone $ @covariant_class.elim _ _ _ _ _ _⟩
instance
mul_pos_strict_mono.to_mul_pos_mono
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_pos_mono", "mul_pos_strict_mono", "strict_mono.monotone" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
pos_mul_mono_rev.to_pos_mul_reflect_lt [pos_mul_mono_rev α] : pos_mul_reflect_lt α
pos_mul_reflect_lt_iff_contravariant_pos.2 ⟨λ a b c h, (le_of_mul_le_mul_of_pos_left h.le a.2).lt_of_ne $ by { rintro rfl, simpa using h }⟩
instance
pos_mul_mono_rev.to_pos_mul_reflect_lt
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "pos_mul_mono_rev", "pos_mul_reflect_lt" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_pos_mono_rev.to_mul_pos_reflect_lt [mul_pos_mono_rev α] : mul_pos_reflect_lt α
mul_pos_reflect_lt_iff_contravariant_pos.2 ⟨λ a b c h, (le_of_mul_le_mul_of_pos_right h.le a.2).lt_of_ne $ by { rintro rfl, simpa using h }⟩
instance
mul_pos_mono_rev.to_mul_pos_reflect_lt
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_pos_mono_rev", "mul_pos_reflect_lt" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_left_cancel_iff_of_pos [pos_mul_mono_rev α] (a0 : 0 < a) : a * b = a * c ↔ b = c
⟨λ h, (le_of_mul_le_mul_of_pos_left h.le a0).antisymm $ le_of_mul_le_mul_of_pos_left h.ge a0, congr_arg _⟩
lemma
mul_left_cancel_iff_of_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "pos_mul_mono_rev" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_right_cancel_iff_of_pos [mul_pos_mono_rev α] (b0 : 0 < b) : a * b = c * b ↔ a = c
⟨λ h, (le_of_mul_le_mul_of_pos_right h.le b0).antisymm $ le_of_mul_le_mul_of_pos_right h.ge b0, congr_arg _⟩
lemma
mul_right_cancel_iff_of_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_pos_mono_rev" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_eq_mul_iff_eq_and_eq_of_pos [pos_mul_strict_mono α] [mul_pos_strict_mono α] [pos_mul_mono_rev α] [mul_pos_mono_rev α] (hac : a ≤ b) (hbd : c ≤ d) (a0 : 0 < a) (d0 : 0 < d) : a * c = b * d ↔ a = b ∧ c = d
begin refine ⟨λ h, _, λ h, congr_arg2 (*) h.1 h.2⟩, rcases hac.eq_or_lt with rfl | hac, { exact ⟨rfl, (mul_left_cancel_iff_of_pos a0).mp h⟩ }, rcases eq_or_lt_of_le hbd with rfl | hbd, { exact ⟨(mul_right_cancel_iff_of_pos d0).mp h, rfl⟩ }, exact ((mul_lt_mul_of_pos_of_pos hac hbd a0 d0).ne h).elim, end
lemma
mul_eq_mul_iff_eq_and_eq_of_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "congr_arg2", "eq_or_lt_of_le", "mul_left_cancel_iff_of_pos", "mul_lt_mul_of_pos_of_pos", "mul_pos_mono_rev", "mul_pos_strict_mono", "mul_right_cancel_iff_of_pos", "pos_mul_mono_rev", "pos_mul_strict_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_eq_mul_iff_eq_and_eq_of_pos' [pos_mul_strict_mono α] [mul_pos_strict_mono α] [pos_mul_mono_rev α] [mul_pos_mono_rev α] (hac : a ≤ b) (hbd : c ≤ d) (b0 : 0 < b) (c0 : 0 < c) : a * c = b * d ↔ a = b ∧ c = d
begin refine ⟨λ h, _, λ h, congr_arg2 (*) h.1 h.2⟩, rcases hac.eq_or_lt with rfl | hac, { exact ⟨rfl, (mul_left_cancel_iff_of_pos b0).mp h⟩ }, rcases eq_or_lt_of_le hbd with rfl | hbd, { exact ⟨(mul_right_cancel_iff_of_pos c0).mp h, rfl⟩ }, exact ((mul_lt_mul_of_lt_of_lt' hac hbd b0 c0).ne h).elim, end
lemma
mul_eq_mul_iff_eq_and_eq_of_pos'
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "congr_arg2", "eq_or_lt_of_le", "mul_left_cancel_iff_of_pos", "mul_lt_mul_of_lt_of_lt'", "mul_pos_mono_rev", "mul_pos_strict_mono", "mul_right_cancel_iff_of_pos", "pos_mul_mono_rev", "pos_mul_strict_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
pos_and_pos_or_neg_and_neg_of_mul_pos [pos_mul_mono α] [mul_pos_mono α] (hab : 0 < a * b) : (0 < a ∧ 0 < b) ∨ (a < 0 ∧ b < 0)
begin rcases lt_trichotomy 0 a with ha | rfl | ha, { refine or.inl ⟨ha, lt_imp_lt_of_le_imp_le (λ hb, _) hab⟩, exact mul_nonpos_of_nonneg_of_nonpos ha.le hb }, { rw [zero_mul] at hab, exact hab.false.elim }, { refine or.inr ⟨ha, lt_imp_lt_of_le_imp_le (λ hb, _) hab⟩, exact mul_nonpos_of_nonpos_of_nonneg...
lemma
pos_and_pos_or_neg_and_neg_of_mul_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "lt_imp_lt_of_le_imp_le", "mul_nonpos_of_nonneg_of_nonpos", "mul_nonpos_of_nonpos_of_nonneg", "mul_pos_mono", "pos_mul_mono", "zero_mul" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
neg_of_mul_pos_right [pos_mul_mono α] [mul_pos_mono α] (h : 0 < a * b) (ha : a ≤ 0) : b < 0
((pos_and_pos_or_neg_and_neg_of_mul_pos h).resolve_left $ λ h, h.1.not_le ha).2
lemma
neg_of_mul_pos_right
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_pos_mono", "pos_and_pos_or_neg_and_neg_of_mul_pos", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
neg_of_mul_pos_left [pos_mul_mono α] [mul_pos_mono α] (h : 0 < a * b) (ha : b ≤ 0) : a < 0
((pos_and_pos_or_neg_and_neg_of_mul_pos h).resolve_left $ λ h, h.2.not_le ha).1
lemma
neg_of_mul_pos_left
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_pos_mono", "pos_and_pos_or_neg_and_neg_of_mul_pos", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
neg_iff_neg_of_mul_pos [pos_mul_mono α] [mul_pos_mono α] (hab : 0 < a * b) : a < 0 ↔ b < 0
⟨neg_of_mul_pos_right hab ∘ le_of_lt, neg_of_mul_pos_left hab ∘ le_of_lt⟩
lemma
neg_iff_neg_of_mul_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_pos_mono", "neg_of_mul_pos_left", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
left.neg_of_mul_neg_left [pos_mul_mono α] (h : a * b < 0) (h1 : 0 ≤ a) : b < 0
lt_of_not_ge (assume h2 : b ≥ 0, (left.mul_nonneg h1 h2).not_lt h)
lemma
left.neg_of_mul_neg_left
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "left.mul_nonneg", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right.neg_of_mul_neg_left [mul_pos_mono α] (h : a * b < 0) (h1 : 0 ≤ a) : b < 0
lt_of_not_ge (assume h2 : b ≥ 0, (right.mul_nonneg h1 h2).not_lt h)
lemma
right.neg_of_mul_neg_left
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_pos_mono", "right.mul_nonneg" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
left.neg_of_mul_neg_right [pos_mul_mono α] (h : a * b < 0) (h1 : 0 ≤ b) : a < 0
lt_of_not_ge (assume h2 : a ≥ 0, (left.mul_nonneg h2 h1).not_lt h)
lemma
left.neg_of_mul_neg_right
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "left.mul_nonneg", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right.neg_of_mul_neg_right [mul_pos_mono α] (h : a * b < 0) (h1 : 0 ≤ b) : a < 0
lt_of_not_ge (assume h2 : a ≥ 0, (right.mul_nonneg h2 h1).not_lt h)
lemma
right.neg_of_mul_neg_right
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_pos_mono", "right.mul_nonneg" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
le_mul_iff_one_le_right [pos_mul_mono α] [pos_mul_mono_rev α] (a0 : 0 < a) : a ≤ a * b ↔ 1 ≤ b
iff.trans (by rw [mul_one]) (mul_le_mul_left a0)
lemma
le_mul_iff_one_le_right
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul_left", "mul_one", "pos_mul_mono", "pos_mul_mono_rev" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
lt_mul_iff_one_lt_right [pos_mul_strict_mono α] [pos_mul_reflect_lt α] (a0 : 0 < a) : a < a * b ↔ 1 < b
iff.trans (by rw [mul_one]) (mul_lt_mul_left a0)
lemma
lt_mul_iff_one_lt_right
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_lt_mul_left", "mul_one", "pos_mul_reflect_lt", "pos_mul_strict_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_le_iff_le_one_right [pos_mul_mono α] [pos_mul_mono_rev α] (a0 : 0 < a) : a * b ≤ a ↔ b ≤ 1
iff.trans (by rw [mul_one]) (mul_le_mul_left a0)
lemma
mul_le_iff_le_one_right
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul_left", "mul_one", "pos_mul_mono", "pos_mul_mono_rev" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_lt_iff_lt_one_right [pos_mul_strict_mono α] [pos_mul_reflect_lt α] (a0 : 0 < a) : a * b < a ↔ b < 1
iff.trans (by rw [mul_one]) (mul_lt_mul_left a0)
lemma
mul_lt_iff_lt_one_right
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_lt_mul_left", "mul_one", "pos_mul_reflect_lt", "pos_mul_strict_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
le_mul_iff_one_le_left [mul_pos_mono α] [mul_pos_mono_rev α] (a0 : 0 < a) : a ≤ b * a ↔ 1 ≤ b
iff.trans (by rw [one_mul]) (mul_le_mul_right a0)
lemma
le_mul_iff_one_le_left
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul_right", "mul_pos_mono", "mul_pos_mono_rev", "one_mul" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
lt_mul_iff_one_lt_left [mul_pos_strict_mono α] [mul_pos_reflect_lt α] (a0 : 0 < a) : a < b * a ↔ 1 < b
iff.trans (by rw [one_mul]) (mul_lt_mul_right a0)
lemma
lt_mul_iff_one_lt_left
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_lt_mul_right", "mul_pos_reflect_lt", "mul_pos_strict_mono", "one_mul" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_le_iff_le_one_left [mul_pos_mono α] [mul_pos_mono_rev α] (b0 : 0 < b) : a * b ≤ b ↔ a ≤ 1
iff.trans (by rw [one_mul]) (mul_le_mul_right b0)
lemma
mul_le_iff_le_one_left
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul_right", "mul_pos_mono", "mul_pos_mono_rev", "one_mul" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_lt_iff_lt_one_left [mul_pos_strict_mono α] [mul_pos_reflect_lt α] (b0 : 0 < b) : a * b < b ↔ a < 1
iff.trans (by rw [one_mul]) (mul_lt_mul_right b0)
lemma
mul_lt_iff_lt_one_left
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_lt_mul_right", "mul_pos_reflect_lt", "mul_pos_strict_mono", "one_mul" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_le_of_le_one_left [mul_pos_mono α] (hb : 0 ≤ b) (h : a ≤ 1) : a * b ≤ b
by simpa only [one_mul] using mul_le_mul_of_nonneg_right h hb
lemma
mul_le_of_le_one_left
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul_of_nonneg_right", "mul_pos_mono", "one_mul" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
le_mul_of_one_le_left [mul_pos_mono α] (hb : 0 ≤ b) (h : 1 ≤ a) : b ≤ a * b
by simpa only [one_mul] using mul_le_mul_of_nonneg_right h hb
lemma
le_mul_of_one_le_left
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul_of_nonneg_right", "mul_pos_mono", "one_mul" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_le_of_le_one_right [pos_mul_mono α] (ha : 0 ≤ a) (h : b ≤ 1) : a * b ≤ a
by simpa only [mul_one] using mul_le_mul_of_nonneg_left h ha
lemma
mul_le_of_le_one_right
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul_of_nonneg_left", "mul_one", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
le_mul_of_one_le_right [pos_mul_mono α] (ha : 0 ≤ a) (h : 1 ≤ b) : a ≤ a * b
by simpa only [mul_one] using mul_le_mul_of_nonneg_left h ha
lemma
le_mul_of_one_le_right
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul_of_nonneg_left", "mul_one", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_lt_of_lt_one_left [mul_pos_strict_mono α] (hb : 0 < b) (h : a < 1) : a * b < b
by simpa only [one_mul] using mul_lt_mul_of_pos_right h hb
lemma
mul_lt_of_lt_one_left
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_lt_mul_of_pos_right", "mul_pos_strict_mono", "one_mul" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
lt_mul_of_one_lt_left [mul_pos_strict_mono α] (hb : 0 < b) (h : 1 < a) : b < a * b
by simpa only [one_mul] using mul_lt_mul_of_pos_right h hb
lemma
lt_mul_of_one_lt_left
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_lt_mul_of_pos_right", "mul_pos_strict_mono", "one_mul" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_lt_of_lt_one_right [pos_mul_strict_mono α] (ha : 0 < a) (h : b < 1) : a * b < a
by simpa only [mul_one] using mul_lt_mul_of_pos_left h ha
lemma
mul_lt_of_lt_one_right
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_lt_mul_of_pos_left", "mul_one", "pos_mul_strict_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
lt_mul_of_one_lt_right [pos_mul_strict_mono α] (ha : 0 < a) (h : 1 < b) : a < a * b
by simpa only [mul_one] using mul_lt_mul_of_pos_left h ha
lemma
lt_mul_of_one_lt_right
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_lt_mul_of_pos_left", "mul_one", "pos_mul_strict_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_le_of_le_of_le_one_of_nonneg [pos_mul_mono α] (h : b ≤ c) (ha : a ≤ 1) (hb : 0 ≤ b) : b * a ≤ c
(mul_le_of_le_one_right hb ha).trans h
lemma
mul_le_of_le_of_le_one_of_nonneg
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_of_le_one_right", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_lt_of_le_of_lt_one_of_pos [pos_mul_strict_mono α] (bc : b ≤ c) (ha : a < 1) (b0 : 0 < b) : b * a < c
(mul_lt_of_lt_one_right b0 ha).trans_le bc
lemma
mul_lt_of_le_of_lt_one_of_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_lt_of_lt_one_right", "pos_mul_strict_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_lt_of_lt_of_le_one_of_nonneg [pos_mul_mono α] (h : b < c) (ha : a ≤ 1) (hb : 0 ≤ b) : b * a < c
(mul_le_of_le_one_right hb ha).trans_lt h
lemma
mul_lt_of_lt_of_le_one_of_nonneg
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_of_le_one_right", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
left.mul_le_one_of_le_of_le [pos_mul_mono α] (ha : a ≤ 1) (hb : b ≤ 1) (a0 : 0 ≤ a) : a * b ≤ 1
mul_le_of_le_of_le_one_of_nonneg ha hb a0
lemma
left.mul_le_one_of_le_of_le
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_of_le_of_le_one_of_nonneg", "pos_mul_mono" ]
Assumes left covariance.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
left.mul_lt_of_le_of_lt_one_of_pos [pos_mul_strict_mono α] (ha : a ≤ 1) (hb : b < 1) (a0 : 0 < a) : a * b < 1
mul_lt_of_le_of_lt_one_of_pos ha hb a0
lemma
left.mul_lt_of_le_of_lt_one_of_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_lt_of_le_of_lt_one_of_pos", "pos_mul_strict_mono" ]
Assumes left covariance.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
left.mul_lt_of_lt_of_le_one_of_nonneg [pos_mul_mono α] (ha : a < 1) (hb : b ≤ 1) (a0 : 0 ≤ a) : a * b < 1
mul_lt_of_lt_of_le_one_of_nonneg ha hb a0
lemma
left.mul_lt_of_lt_of_le_one_of_nonneg
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_lt_of_lt_of_le_one_of_nonneg", "pos_mul_mono" ]
Assumes left covariance.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_le_of_le_of_le_one' [pos_mul_mono α] [mul_pos_mono α] (bc : b ≤ c) (ha : a ≤ 1) (a0 : 0 ≤ a) (c0 : 0 ≤ c) : b * a ≤ c
(mul_le_mul_of_nonneg_right bc a0).trans $ mul_le_of_le_one_right c0 ha
lemma
mul_le_of_le_of_le_one'
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul_of_nonneg_right", "mul_le_of_le_one_right", "mul_pos_mono", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_lt_of_lt_of_le_one' [pos_mul_mono α] [mul_pos_strict_mono α] (bc : b < c) (ha : a ≤ 1) (a0 : 0 < a) (c0 : 0 ≤ c) : b * a < c
(mul_lt_mul_of_pos_right bc a0).trans_le $ mul_le_of_le_one_right c0 ha
lemma
mul_lt_of_lt_of_le_one'
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_of_le_one_right", "mul_lt_mul_of_pos_right", "mul_pos_strict_mono", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_lt_of_le_of_lt_one' [pos_mul_strict_mono α] [mul_pos_mono α] (bc : b ≤ c) (ha : a < 1) (a0 : 0 ≤ a) (c0 : 0 < c) : b * a < c
(mul_le_mul_of_nonneg_right bc a0).trans_lt $ mul_lt_of_lt_one_right c0 ha
lemma
mul_lt_of_le_of_lt_one'
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul_of_nonneg_right", "mul_lt_of_lt_one_right", "mul_pos_mono", "pos_mul_strict_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_lt_of_lt_of_lt_one_of_pos [pos_mul_mono α] [mul_pos_strict_mono α] (bc : b < c) (ha : a ≤ 1) (a0 : 0 < a) (c0 : 0 ≤ c) : b * a < c
(mul_lt_mul_of_pos_right bc a0).trans_le $ mul_le_of_le_one_right c0 ha
lemma
mul_lt_of_lt_of_lt_one_of_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_of_le_one_right", "mul_lt_mul_of_pos_right", "mul_pos_strict_mono", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
le_mul_of_le_of_one_le_of_nonneg [pos_mul_mono α] (h : b ≤ c) (ha : 1 ≤ a) (hc : 0 ≤ c) : b ≤ c * a
h.trans $ le_mul_of_one_le_right hc ha
lemma
le_mul_of_le_of_one_le_of_nonneg
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "le_mul_of_one_le_right", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
lt_mul_of_le_of_one_lt_of_pos [pos_mul_strict_mono α] (bc : b ≤ c) (ha : 1 < a) (c0 : 0 < c) : b < c * a
bc.trans_lt $ lt_mul_of_one_lt_right c0 ha
lemma
lt_mul_of_le_of_one_lt_of_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "lt_mul_of_one_lt_right", "pos_mul_strict_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
lt_mul_of_lt_of_one_le_of_nonneg [pos_mul_mono α] (h : b < c) (ha : 1 ≤ a) (hc : 0 ≤ c) : b < c * a
h.trans_le $ le_mul_of_one_le_right hc ha
lemma
lt_mul_of_lt_of_one_le_of_nonneg
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "le_mul_of_one_le_right", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
left.one_le_mul_of_le_of_le [pos_mul_mono α] (ha : 1 ≤ a) (hb : 1 ≤ b) (a0 : 0 ≤ a) : 1 ≤ a * b
le_mul_of_le_of_one_le_of_nonneg ha hb a0
lemma
left.one_le_mul_of_le_of_le
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "le_mul_of_le_of_one_le_of_nonneg", "pos_mul_mono" ]
Assumes left covariance.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
left.one_lt_mul_of_le_of_lt_of_pos [pos_mul_strict_mono α] (ha : 1 ≤ a) (hb : 1 < b) (a0 : 0 < a) : 1 < a * b
lt_mul_of_le_of_one_lt_of_pos ha hb a0
lemma
left.one_lt_mul_of_le_of_lt_of_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "lt_mul_of_le_of_one_lt_of_pos", "pos_mul_strict_mono" ]
Assumes left covariance.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
left.lt_mul_of_lt_of_one_le_of_nonneg [pos_mul_mono α] (ha : 1 < a) (hb : 1 ≤ b) (a0 : 0 ≤ a) : 1 < a * b
lt_mul_of_lt_of_one_le_of_nonneg ha hb a0
lemma
left.lt_mul_of_lt_of_one_le_of_nonneg
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "lt_mul_of_lt_of_one_le_of_nonneg", "pos_mul_mono" ]
Assumes left covariance.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
le_mul_of_le_of_one_le' [pos_mul_mono α] [mul_pos_mono α] (bc : b ≤ c) (ha : 1 ≤ a) (a0 : 0 ≤ a) (b0 : 0 ≤ b) : b ≤ c * a
(le_mul_of_one_le_right b0 ha).trans $ mul_le_mul_of_nonneg_right bc a0
lemma
le_mul_of_le_of_one_le'
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "le_mul_of_one_le_right", "mul_le_mul_of_nonneg_right", "mul_pos_mono", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
lt_mul_of_le_of_one_lt' [pos_mul_strict_mono α] [mul_pos_mono α] (bc : b ≤ c) (ha : 1 < a) (a0 : 0 ≤ a) (b0 : 0 < b) : b < c * a
(lt_mul_of_one_lt_right b0 ha).trans_le $ mul_le_mul_of_nonneg_right bc a0
lemma
lt_mul_of_le_of_one_lt'
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "lt_mul_of_one_lt_right", "mul_le_mul_of_nonneg_right", "mul_pos_mono", "pos_mul_strict_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
lt_mul_of_lt_of_one_le' [pos_mul_mono α] [mul_pos_strict_mono α] (bc : b < c) (ha : 1 ≤ a) (a0 : 0 < a) (b0 : 0 ≤ b) : b < c * a
(le_mul_of_one_le_right b0 ha).trans_lt $ mul_lt_mul_of_pos_right bc a0
lemma
lt_mul_of_lt_of_one_le'
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "le_mul_of_one_le_right", "mul_lt_mul_of_pos_right", "mul_pos_strict_mono", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
lt_mul_of_lt_of_one_lt_of_pos [pos_mul_strict_mono α] [mul_pos_strict_mono α] (bc : b < c) (ha : 1 < a) (a0 : 0 < a) (b0 : 0 < b) : b < c * a
(lt_mul_of_one_lt_right b0 ha).trans $ mul_lt_mul_of_pos_right bc a0
lemma
lt_mul_of_lt_of_one_lt_of_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "lt_mul_of_one_lt_right", "mul_lt_mul_of_pos_right", "mul_pos_strict_mono", "pos_mul_strict_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_le_of_le_one_of_le_of_nonneg [mul_pos_mono α] (ha : a ≤ 1) (h : b ≤ c) (hb : 0 ≤ b) : a * b ≤ c
(mul_le_of_le_one_left hb ha).trans h
lemma
mul_le_of_le_one_of_le_of_nonneg
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_of_le_one_left", "mul_pos_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_lt_of_lt_one_of_le_of_pos [mul_pos_strict_mono α] (ha : a < 1) (h : b ≤ c) (hb : 0 < b) : a * b < c
(mul_lt_of_lt_one_left hb ha).trans_le h
lemma
mul_lt_of_lt_one_of_le_of_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_lt_of_lt_one_left", "mul_pos_strict_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_lt_of_le_one_of_lt_of_nonneg [mul_pos_mono α] (ha : a ≤ 1) (h : b < c) (hb : 0 ≤ b) : a * b < c
(mul_le_of_le_one_left hb ha).trans_lt h
lemma
mul_lt_of_le_one_of_lt_of_nonneg
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_of_le_one_left", "mul_pos_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right.mul_lt_one_of_lt_of_le_of_pos [mul_pos_strict_mono α] (ha : a < 1) (hb : b ≤ 1) (b0 : 0 < b) : a * b < 1
mul_lt_of_lt_one_of_le_of_pos ha hb b0
lemma
right.mul_lt_one_of_lt_of_le_of_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_lt_of_lt_one_of_le_of_pos", "mul_pos_strict_mono" ]
Assumes right covariance.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right.mul_lt_one_of_le_of_lt_of_nonneg [mul_pos_mono α] (ha : a ≤ 1) (hb : b < 1) (b0 : 0 ≤ b) : a * b < 1
mul_lt_of_le_one_of_lt_of_nonneg ha hb b0
lemma
right.mul_lt_one_of_le_of_lt_of_nonneg
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_lt_of_le_one_of_lt_of_nonneg", "mul_pos_mono" ]
Assumes right covariance.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_lt_of_lt_one_of_lt_of_pos [pos_mul_strict_mono α] [mul_pos_strict_mono α] (ha : a < 1) (bc : b < c) (a0 : 0 < a) (c0 : 0 < c) : a * b < c
(mul_lt_mul_of_pos_left bc a0).trans $ mul_lt_of_lt_one_left c0 ha
lemma
mul_lt_of_lt_one_of_lt_of_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_lt_mul_of_pos_left", "mul_lt_of_lt_one_left", "mul_pos_strict_mono", "pos_mul_strict_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right.mul_le_one_of_le_of_le [mul_pos_mono α] (ha : a ≤ 1) (hb : b ≤ 1) (b0 : 0 ≤ b) : a * b ≤ 1
mul_le_of_le_one_of_le_of_nonneg ha hb b0
lemma
right.mul_le_one_of_le_of_le
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_of_le_one_of_le_of_nonneg", "mul_pos_mono" ]
Assumes right covariance.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_le_of_le_one_of_le' [pos_mul_mono α] [mul_pos_mono α] (ha : a ≤ 1) (bc : b ≤ c) (a0 : 0 ≤ a) (c0 : 0 ≤ c) : a * b ≤ c
(mul_le_mul_of_nonneg_left bc a0).trans $ mul_le_of_le_one_left c0 ha
lemma
mul_le_of_le_one_of_le'
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul_of_nonneg_left", "mul_le_of_le_one_left", "mul_pos_mono", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_lt_of_lt_one_of_le' [pos_mul_mono α] [mul_pos_strict_mono α] (ha : a < 1) (bc : b ≤ c) (a0 : 0 ≤ a) (c0 : 0 < c) : a * b < c
(mul_le_mul_of_nonneg_left bc a0).trans_lt $ mul_lt_of_lt_one_left c0 ha
lemma
mul_lt_of_lt_one_of_le'
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul_of_nonneg_left", "mul_lt_of_lt_one_left", "mul_pos_strict_mono", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_lt_of_le_one_of_lt' [pos_mul_strict_mono α] [mul_pos_mono α] (ha : a ≤ 1) (bc : b < c) (a0 : 0 < a) (c0 : 0 ≤ c) : a * b < c
(mul_lt_mul_of_pos_left bc a0).trans_le $ mul_le_of_le_one_left c0 ha
lemma
mul_lt_of_le_one_of_lt'
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_of_le_one_left", "mul_lt_mul_of_pos_left", "mul_pos_mono", "pos_mul_strict_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
lt_mul_of_one_lt_of_le_of_pos [mul_pos_strict_mono α] (ha : 1 < a) (h : b ≤ c) (hc : 0 < c) : b < a * c
h.trans_lt $ lt_mul_of_one_lt_left hc ha
lemma
lt_mul_of_one_lt_of_le_of_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "lt_mul_of_one_lt_left", "mul_pos_strict_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
lt_mul_of_one_le_of_lt_of_nonneg [mul_pos_mono α] (ha : 1 ≤ a) (h : b < c) (hc : 0 ≤ c) : b < a * c
h.trans_le $ le_mul_of_one_le_left hc ha
lemma
lt_mul_of_one_le_of_lt_of_nonneg
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "le_mul_of_one_le_left", "mul_pos_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
lt_mul_of_one_lt_of_lt_of_pos [mul_pos_strict_mono α] (ha : 1 < a) (h : b < c) (hc : 0 < c) : b < a * c
h.trans $ lt_mul_of_one_lt_left hc ha
lemma
lt_mul_of_one_lt_of_lt_of_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "lt_mul_of_one_lt_left", "mul_pos_strict_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right.one_lt_mul_of_lt_of_le_of_pos [mul_pos_strict_mono α] (ha : 1 < a) (hb : 1 ≤ b) (b0 : 0 < b) : 1 < a * b
lt_mul_of_one_lt_of_le_of_pos ha hb b0
lemma
right.one_lt_mul_of_lt_of_le_of_pos
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "lt_mul_of_one_lt_of_le_of_pos", "mul_pos_strict_mono" ]
Assumes right covariance.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right.one_lt_mul_of_le_of_lt_of_nonneg [mul_pos_mono α] (ha : 1 ≤ a) (hb : 1 < b) (b0 : 0 ≤ b) : 1 < a * b
lt_mul_of_one_le_of_lt_of_nonneg ha hb b0
lemma
right.one_lt_mul_of_le_of_lt_of_nonneg
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "lt_mul_of_one_le_of_lt_of_nonneg", "mul_pos_mono" ]
Assumes right covariance.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right.one_lt_mul_of_lt_of_lt [mul_pos_strict_mono α] (ha : 1 < a) (hb : 1 < b) (b0 : 0 < b) : 1 < a * b
lt_mul_of_one_lt_of_lt_of_pos ha hb b0
lemma
right.one_lt_mul_of_lt_of_lt
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "lt_mul_of_one_lt_of_lt_of_pos", "mul_pos_strict_mono" ]
Assumes right covariance.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
lt_mul_of_one_lt_of_lt_of_nonneg [mul_pos_mono α] (ha : 1 ≤ a) (h : b < c) (hc : 0 ≤ c) : b < a * c
h.trans_le $ le_mul_of_one_le_left hc ha
lemma
lt_mul_of_one_lt_of_lt_of_nonneg
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "le_mul_of_one_le_left", "mul_pos_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
lt_of_mul_lt_of_one_le_of_nonneg_left [pos_mul_mono α] (h : a * b < c) (hle : 1 ≤ b) (ha : 0 ≤ a) : a < c
(le_mul_of_one_le_right ha hle).trans_lt h
lemma
lt_of_mul_lt_of_one_le_of_nonneg_left
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "le_mul_of_one_le_right", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
lt_of_lt_mul_of_le_one_of_nonneg_left [pos_mul_mono α] (h : a < b * c) (hc : c ≤ 1) (hb : 0 ≤ b) : a < b
h.trans_le $ mul_le_of_le_one_right hb hc
lemma
lt_of_lt_mul_of_le_one_of_nonneg_left
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_of_le_one_right", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
lt_of_lt_mul_of_le_one_of_nonneg_right [mul_pos_mono α] (h : a < b * c) (hb : b ≤ 1) (hc : 0 ≤ c) : a < c
h.trans_le $ mul_le_of_le_one_left hc hb
lemma
lt_of_lt_mul_of_le_one_of_nonneg_right
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_of_le_one_left", "mul_pos_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
le_mul_of_one_le_of_le_of_nonneg [mul_pos_mono α] (ha : 1 ≤ a) (bc : b ≤ c) (c0 : 0 ≤ c) : b ≤ a * c
bc.trans $ le_mul_of_one_le_left c0 ha
lemma
le_mul_of_one_le_of_le_of_nonneg
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "le_mul_of_one_le_left", "mul_pos_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
right.one_le_mul_of_le_of_le [mul_pos_mono α] (ha : 1 ≤ a) (hb : 1 ≤ b) (b0 : 0 ≤ b) : 1 ≤ a * b
le_mul_of_one_le_of_le_of_nonneg ha hb b0
lemma
right.one_le_mul_of_le_of_le
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "le_mul_of_one_le_of_le_of_nonneg", "mul_pos_mono" ]
Assumes right covariance.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
le_of_mul_le_of_one_le_of_nonneg_left [pos_mul_mono α] (h : a * b ≤ c) (hb : 1 ≤ b) (ha : 0 ≤ a) : a ≤ c
(le_mul_of_one_le_right ha hb).trans h
lemma
le_of_mul_le_of_one_le_of_nonneg_left
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "le_mul_of_one_le_right", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
le_of_le_mul_of_le_one_of_nonneg_left [pos_mul_mono α] (h : a ≤ b * c) (hc : c ≤ 1) (hb : 0 ≤ b) : a ≤ b
h.trans $ mul_le_of_le_one_right hb hc
lemma
le_of_le_mul_of_le_one_of_nonneg_left
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_of_le_one_right", "pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
le_of_mul_le_of_one_le_nonneg_right [mul_pos_mono α] (h : a * b ≤ c) (ha : 1 ≤ a) (hb : 0 ≤ b) : b ≤ c
(le_mul_of_one_le_left hb ha).trans h
lemma
le_of_mul_le_of_one_le_nonneg_right
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "le_mul_of_one_le_left", "mul_pos_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
le_of_le_mul_of_le_one_of_nonneg_right [mul_pos_mono α] (h : a ≤ b * c) (hb : b ≤ 1) (hc : 0 ≤ c) : a ≤ c
h.trans $ mul_le_of_le_one_left hc hb
lemma
le_of_le_mul_of_le_one_of_nonneg_right
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_of_le_one_left", "mul_pos_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
exists_square_le' [pos_mul_strict_mono α] (a0 : 0 < a) : ∃ (b : α), b * b ≤ a
begin obtain ha | ha := lt_or_le a 1, { exact ⟨a, (mul_lt_of_lt_one_right a0 ha).le⟩ }, { exact ⟨1, by rwa mul_one⟩ } end
lemma
exists_square_le'
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_lt_of_lt_one_right", "pos_mul_strict_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
pos_mul_mono.to_pos_mul_strict_mono [pos_mul_mono α] : pos_mul_strict_mono α
⟨λ x a b h, (mul_le_mul_of_nonneg_left h.le x.2.le).lt_of_ne (h.ne ∘ mul_left_cancel₀ x.2.ne')⟩
lemma
pos_mul_mono.to_pos_mul_strict_mono
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul_of_nonneg_left", "mul_left_cancel₀", "pos_mul_mono", "pos_mul_strict_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
pos_mul_mono_iff_pos_mul_strict_mono : pos_mul_mono α ↔ pos_mul_strict_mono α
⟨@pos_mul_mono.to_pos_mul_strict_mono α _ _, @pos_mul_strict_mono.to_pos_mul_mono α _ _⟩
lemma
pos_mul_mono_iff_pos_mul_strict_mono
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "pos_mul_mono", "pos_mul_mono.to_pos_mul_strict_mono", "pos_mul_strict_mono", "pos_mul_strict_mono.to_pos_mul_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_pos_mono.to_mul_pos_strict_mono [mul_pos_mono α] : mul_pos_strict_mono α
⟨λ x a b h, (mul_le_mul_of_nonneg_right h.le x.2.le).lt_of_ne (h.ne ∘ mul_right_cancel₀ x.2.ne')⟩
lemma
mul_pos_mono.to_mul_pos_strict_mono
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_le_mul_of_nonneg_right", "mul_pos_mono", "mul_pos_strict_mono", "mul_right_cancel₀" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_pos_mono_iff_mul_pos_strict_mono : mul_pos_mono α ↔ mul_pos_strict_mono α
⟨@mul_pos_mono.to_mul_pos_strict_mono α _ _, @mul_pos_strict_mono.to_mul_pos_mono α _ _⟩
lemma
mul_pos_mono_iff_mul_pos_strict_mono
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_pos_mono", "mul_pos_mono.to_mul_pos_strict_mono", "mul_pos_strict_mono", "mul_pos_strict_mono.to_mul_pos_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
pos_mul_reflect_lt.to_pos_mul_mono_rev [pos_mul_reflect_lt α] : pos_mul_mono_rev α
⟨λ x a b h, h.eq_or_lt.elim (le_of_eq ∘ mul_left_cancel₀ x.2.ne.symm) (λ h', (lt_of_mul_lt_mul_left h' x.2.le).le)⟩
lemma
pos_mul_reflect_lt.to_pos_mul_mono_rev
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "lt_of_mul_lt_mul_left", "mul_left_cancel₀", "pos_mul_mono_rev", "pos_mul_reflect_lt" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
pos_mul_mono_rev_iff_pos_mul_reflect_lt : pos_mul_mono_rev α ↔ pos_mul_reflect_lt α
⟨@pos_mul_mono_rev.to_pos_mul_reflect_lt α _ _, @pos_mul_reflect_lt.to_pos_mul_mono_rev α _ _⟩
lemma
pos_mul_mono_rev_iff_pos_mul_reflect_lt
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "pos_mul_mono_rev", "pos_mul_mono_rev.to_pos_mul_reflect_lt", "pos_mul_reflect_lt", "pos_mul_reflect_lt.to_pos_mul_mono_rev" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_pos_reflect_lt.to_mul_pos_mono_rev [mul_pos_reflect_lt α] : mul_pos_mono_rev α
⟨λ x a b h, h.eq_or_lt.elim (le_of_eq ∘ mul_right_cancel₀ x.2.ne.symm) (λ h', (lt_of_mul_lt_mul_right h' x.2.le).le)⟩
lemma
mul_pos_reflect_lt.to_mul_pos_mono_rev
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "lt_of_mul_lt_mul_right", "mul_pos_mono_rev", "mul_pos_reflect_lt", "mul_right_cancel₀" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
mul_pos_mono_rev_iff_mul_pos_reflect_lt : mul_pos_mono_rev α ↔ mul_pos_reflect_lt α
⟨@mul_pos_mono_rev.to_mul_pos_reflect_lt α _ _, @mul_pos_reflect_lt.to_mul_pos_mono_rev α _ _⟩
lemma
mul_pos_mono_rev_iff_mul_pos_reflect_lt
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_pos_mono_rev", "mul_pos_mono_rev.to_mul_pos_reflect_lt", "mul_pos_reflect_lt", "mul_pos_reflect_lt.to_mul_pos_mono_rev" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
pos_mul_strict_mono_iff_mul_pos_strict_mono : pos_mul_strict_mono α ↔ mul_pos_strict_mono α
by simp ! only [mul_comm]
lemma
pos_mul_strict_mono_iff_mul_pos_strict_mono
algebra.order.ring
src/algebra/order/ring/lemmas.lean
[ "algebra.covariant_and_contravariant", "algebra.group_with_zero.defs" ]
[ "mul_comm", "mul_pos_strict_mono", "pos_mul_strict_mono" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83