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is_bounded.all (s : set α) : is_bounded s
bounded_space.bounded_univ.subset s.subset_univ
lemma
bornology.is_bounded.all
topology.bornology
src/topology/bornology/basic.lean
[ "order.filter.cofinite" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
is_cobounded.all (s : set α) : is_cobounded s
compl_compl s ▸ is_bounded.all sᶜ
lemma
bornology.is_cobounded.all
topology.bornology
src/topology/bornology/basic.lean
[ "order.filter.cofinite" ]
[ "compl_compl" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
cobounded_eq_bot : cobounded α = ⊥
cobounded_eq_bot_iff.2 ‹_›
lemma
bornology.cobounded_eq_bot
topology.bornology
src/topology/bornology/basic.lean
[ "order.filter.cofinite" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
bornology.induced {α β : Type*} [bornology β] (f : α → β) : bornology α
{ cobounded := comap f (cobounded β), le_cofinite := (comap_mono (bornology.le_cofinite β)).trans (comap_cofinite_le _) }
def
bornology.induced
topology.bornology
src/topology/bornology/constructions.lean
[ "topology.bornology.basic" ]
[ "bornology" ]
Inverse image of a bornology.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
cobounded_prod : cobounded (α × β) = (cobounded α).coprod (cobounded β)
rfl
lemma
bornology.cobounded_prod
topology.bornology
src/topology/bornology/constructions.lean
[ "topology.bornology.basic" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
is_bounded_image_fst_and_snd {s : set (α × β)} : is_bounded (prod.fst '' s) ∧ is_bounded (prod.snd '' s) ↔ is_bounded s
compl_mem_coprod.symm
lemma
bornology.is_bounded_image_fst_and_snd
topology.bornology
src/topology/bornology/constructions.lean
[ "topology.bornology.basic" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
is_bounded.fst_of_prod (h : is_bounded (s ×ˢ t)) (ht : t.nonempty) : is_bounded s
fst_image_prod s ht ▸ (is_bounded_image_fst_and_snd.2 h).1
lemma
bornology.is_bounded.fst_of_prod
topology.bornology
src/topology/bornology/constructions.lean
[ "topology.bornology.basic" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
is_bounded.snd_of_prod (h : is_bounded (s ×ˢ t)) (hs : s.nonempty) : is_bounded t
snd_image_prod hs t ▸ (is_bounded_image_fst_and_snd.2 h).2
lemma
bornology.is_bounded.snd_of_prod
topology.bornology
src/topology/bornology/constructions.lean
[ "topology.bornology.basic" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
is_bounded.prod (hs : is_bounded s) (ht : is_bounded t) : is_bounded (s ×ˢ t)
is_bounded_image_fst_and_snd.1 ⟨hs.subset $ fst_image_prod_subset _ _, ht.subset $ snd_image_prod_subset _ _⟩
lemma
bornology.is_bounded.prod
topology.bornology
src/topology/bornology/constructions.lean
[ "topology.bornology.basic" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
is_bounded_prod_of_nonempty (hne : set.nonempty (s ×ˢ t)) : is_bounded (s ×ˢ t) ↔ is_bounded s ∧ is_bounded t
⟨λ h, ⟨h.fst_of_prod hne.snd, h.snd_of_prod hne.fst⟩, λ h, h.1.prod h.2⟩
lemma
bornology.is_bounded_prod_of_nonempty
topology.bornology
src/topology/bornology/constructions.lean
[ "topology.bornology.basic" ]
[ "set.nonempty" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
is_bounded_prod : is_bounded (s ×ˢ t) ↔ s = ∅ ∨ t = ∅ ∨ is_bounded s ∧ is_bounded t
begin rcases s.eq_empty_or_nonempty with rfl|hs, { simp }, rcases t.eq_empty_or_nonempty with rfl|ht, { simp }, simp only [hs.ne_empty, ht.ne_empty, is_bounded_prod_of_nonempty (hs.prod ht), false_or] end
lemma
bornology.is_bounded_prod
topology.bornology
src/topology/bornology/constructions.lean
[ "topology.bornology.basic" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
is_bounded_prod_self : is_bounded (s ×ˢ s) ↔ is_bounded s
begin rcases s.eq_empty_or_nonempty with rfl|hs, { simp }, exact (is_bounded_prod_of_nonempty (hs.prod hs)).trans (and_self _) end
lemma
bornology.is_bounded_prod_self
topology.bornology
src/topology/bornology/constructions.lean
[ "topology.bornology.basic" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
cobounded_pi : cobounded (Π i, π i) = filter.Coprod (λ i, cobounded (π i))
rfl
lemma
bornology.cobounded_pi
topology.bornology
src/topology/bornology/constructions.lean
[ "topology.bornology.basic" ]
[ "filter.Coprod" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
forall_is_bounded_image_eval_iff {s : set (Π i, π i)} : (∀ i, is_bounded (eval i '' s)) ↔ is_bounded s
compl_mem_Coprod.symm
lemma
bornology.forall_is_bounded_image_eval_iff
topology.bornology
src/topology/bornology/constructions.lean
[ "topology.bornology.basic" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
is_bounded.pi (h : ∀ i, is_bounded (S i)) : is_bounded (pi univ S)
forall_is_bounded_image_eval_iff.1 $ λ i, (h i).subset eval_image_univ_pi_subset
lemma
bornology.is_bounded.pi
topology.bornology
src/topology/bornology/constructions.lean
[ "topology.bornology.basic" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
is_bounded_pi_of_nonempty (hne : (pi univ S).nonempty) : is_bounded (pi univ S) ↔ ∀ i, is_bounded (S i)
⟨λ H i, @eval_image_univ_pi _ _ _ i hne ▸ forall_is_bounded_image_eval_iff.2 H i, is_bounded.pi⟩
lemma
bornology.is_bounded_pi_of_nonempty
topology.bornology
src/topology/bornology/constructions.lean
[ "topology.bornology.basic" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
is_bounded_pi : is_bounded (pi univ S) ↔ (∃ i, S i = ∅) ∨ ∀ i, is_bounded (S i)
begin by_cases hne : ∃ i, S i = ∅, { simp [hne, univ_pi_eq_empty_iff.2 hne] }, { simp only [hne, false_or], simp only [not_exists, ← ne.def, ←nonempty_iff_ne_empty, ← univ_pi_nonempty_iff] at hne, exact is_bounded_pi_of_nonempty hne } end
lemma
bornology.is_bounded_pi
topology.bornology
src/topology/bornology/constructions.lean
[ "topology.bornology.basic" ]
[ "not_exists" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
is_bounded_induced {α β : Type*} [bornology β] {f : α → β} {s : set α} : @is_bounded α (bornology.induced f) s ↔ is_bounded (f '' s)
compl_mem_comap
lemma
bornology.is_bounded_induced
topology.bornology
src/topology/bornology/constructions.lean
[ "topology.bornology.basic" ]
[ "bornology", "bornology.induced" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
is_bounded_image_subtype_coe {p : α → Prop} {s : set {x // p x}} : is_bounded (coe '' s : set α) ↔ is_bounded s
is_bounded_induced.symm
lemma
bornology.is_bounded_image_subtype_coe
topology.bornology
src/topology/bornology/constructions.lean
[ "topology.bornology.basic" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
bounded_space_induced_iff {α β : Type*} [bornology β] {f : α → β} : @bounded_space α (bornology.induced f) ↔ is_bounded (range f)
by rw [← is_bounded_univ, is_bounded_induced, image_univ]
lemma
bounded_space_induced_iff
topology.bornology
src/topology/bornology/constructions.lean
[ "topology.bornology.basic" ]
[ "bornology", "bornology.induced", "bounded_space" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
bounded_space_subtype_iff {p : α → Prop} : bounded_space (subtype p) ↔ is_bounded {x | p x}
by rw [bounded_space_induced_iff, subtype.range_coe_subtype]
lemma
bounded_space_subtype_iff
topology.bornology
src/topology/bornology/constructions.lean
[ "topology.bornology.basic" ]
[ "bounded_space", "bounded_space_induced_iff", "subtype.range_coe_subtype" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
bounded_space_coe_set_iff {s : set α} : bounded_space s ↔ is_bounded s
bounded_space_subtype_iff
lemma
bounded_space_coe_set_iff
topology.bornology
src/topology/bornology/constructions.lean
[ "topology.bornology.basic" ]
[ "bounded_space", "bounded_space_subtype_iff" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
locally_bounded_map (α β : Type*) [bornology α] [bornology β]
(to_fun : α → β) (comap_cobounded_le' : (cobounded β).comap to_fun ≤ cobounded α)
structure
locally_bounded_map
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[ "bornology" ]
The type of bounded maps from `α` to `β`, the maps which send a bounded set to a bounded set.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
locally_bounded_map_class (F : Type*) (α β : out_param $ Type*) [bornology α] [bornology β] extends fun_like F α (λ _, β)
(comap_cobounded_le (f : F) : (cobounded β).comap f ≤ cobounded α)
class
locally_bounded_map_class
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[ "bornology", "fun_like" ]
`locally_bounded_map_class F α β` states that `F` is a type of bounded maps. You should extend this class when you extend `locally_bounded_map`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
is_bounded.image [bornology α] [bornology β] [locally_bounded_map_class F α β] {f : F} {s : set α} (hs : is_bounded s) : is_bounded (f '' s)
comap_cobounded_le_iff.1 (comap_cobounded_le f) hs
lemma
is_bounded.image
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[ "bornology", "locally_bounded_map_class" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
to_fun_eq_coe {f : locally_bounded_map α β} : f.to_fun = (f : α → β)
rfl
lemma
locally_bounded_map.to_fun_eq_coe
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[ "locally_bounded_map" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
ext {f g : locally_bounded_map α β} (h : ∀ a, f a = g a) : f = g
fun_like.ext f g h
lemma
locally_bounded_map.ext
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[ "fun_like.ext", "locally_bounded_map" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
copy (f : locally_bounded_map α β) (f' : α → β) (h : f' = f) : locally_bounded_map α β
⟨f', h.symm ▸ f.comap_cobounded_le'⟩
def
locally_bounded_map.copy
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[ "locally_bounded_map" ]
Copy of a `locally_bounded_map` with a new `to_fun` equal to the old one. Useful to fix definitional equalities.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_copy (f : locally_bounded_map α β) (f' : α → β) (h : f' = f) : ⇑(f.copy f' h) = f'
rfl
lemma
locally_bounded_map.coe_copy
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[ "locally_bounded_map" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
copy_eq (f : locally_bounded_map α β) (f' : α → β) (h : f' = f) : f.copy f' h = f
fun_like.ext' h
lemma
locally_bounded_map.copy_eq
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[ "fun_like.ext'", "locally_bounded_map" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
of_map_bounded (f : α → β) (h) : locally_bounded_map α β
⟨f, comap_cobounded_le_iff.2 h⟩
def
locally_bounded_map.of_map_bounded
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[ "locally_bounded_map" ]
Construct a `locally_bounded_map` from the fact that the function maps bounded sets to bounded sets.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_of_map_bounded (f : α → β) {h} : ⇑(of_map_bounded f h) = f
rfl
lemma
locally_bounded_map.coe_of_map_bounded
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
of_map_bounded_apply (f : α → β) {h} (a : α) : of_map_bounded f h a = f a
rfl
lemma
locally_bounded_map.of_map_bounded_apply
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
id : locally_bounded_map α α
⟨id, comap_id.le⟩
def
locally_bounded_map.id
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[ "locally_bounded_map" ]
`id` as a `locally_bounded_map`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_id : ⇑(locally_bounded_map.id α) = id
rfl
lemma
locally_bounded_map.coe_id
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[ "locally_bounded_map.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
id_apply (a : α) : locally_bounded_map.id α a = a
rfl
lemma
locally_bounded_map.id_apply
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[ "locally_bounded_map.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
comp (f : locally_bounded_map β γ) (g : locally_bounded_map α β) : locally_bounded_map α γ
{ to_fun := f ∘ g, comap_cobounded_le' := comap_comap.ge.trans $ (comap_mono f.comap_cobounded_le').trans g.comap_cobounded_le' }
def
locally_bounded_map.comp
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[ "locally_bounded_map" ]
Composition of `locally_bounded_map`s as a `locally_bounded_map`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_comp (f : locally_bounded_map β γ) (g : locally_bounded_map α β) : ⇑(f.comp g) = f ∘ g
rfl
lemma
locally_bounded_map.coe_comp
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[ "locally_bounded_map" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
comp_apply (f : locally_bounded_map β γ) (g : locally_bounded_map α β) (a : α) : f.comp g a = f (g a)
rfl
lemma
locally_bounded_map.comp_apply
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[ "locally_bounded_map" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
comp_assoc (f : locally_bounded_map γ δ) (g : locally_bounded_map β γ) (h : locally_bounded_map α β) : (f.comp g).comp h = f.comp (g.comp h)
rfl
lemma
locally_bounded_map.comp_assoc
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[ "locally_bounded_map" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
comp_id (f : locally_bounded_map α β) : f.comp (locally_bounded_map.id α) = f
ext $ λ a, rfl
lemma
locally_bounded_map.comp_id
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[ "locally_bounded_map", "locally_bounded_map.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
id_comp (f : locally_bounded_map α β) : (locally_bounded_map.id β).comp f = f
ext $ λ a, rfl
lemma
locally_bounded_map.id_comp
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[ "locally_bounded_map", "locally_bounded_map.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
cancel_right {g₁ g₂ : locally_bounded_map β γ} {f : locally_bounded_map α β} (hf : surjective f) : g₁.comp f = g₂.comp f ↔ g₁ = g₂
⟨λ h, ext $ hf.forall.2 $ fun_like.ext_iff.1 h, congr_arg _⟩
lemma
locally_bounded_map.cancel_right
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[ "locally_bounded_map" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
cancel_left {g : locally_bounded_map β γ} {f₁ f₂ : locally_bounded_map α β} (hg : injective g) : g.comp f₁ = g.comp f₂ ↔ f₁ = f₂
⟨λ h, ext $ λ a, hg $ by rw [←comp_apply, h, comp_apply], congr_arg _⟩
lemma
locally_bounded_map.cancel_left
topology.bornology
src/topology/bornology/hom.lean
[ "topology.bornology.basic" ]
[ "locally_bounded_map" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
Born
bundled bornology
def
Born
topology.category
src/topology/category/Born.lean
[ "category_theory.concrete_category.bundled_hom", "topology.bornology.hom" ]
[ "bornology" ]
The category of bornologies.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
of (α : Type*) [bornology α] : Born
bundled.of α
def
Born.of
topology.category
src/topology/category/Born.lean
[ "category_theory.concrete_category.bundled_hom", "topology.bornology.hom" ]
[ "Born", "bornology" ]
Construct a bundled `Born` from a `bornology`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
Compactum
monad.algebra β
def
Compactum
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[]
The type `Compactum` of Compacta, defined as algebras for the ultrafilter monad.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
forget : Compactum ⥤ Type*
monad.forget _
def
Compactum.forget
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum" ]
The forgetful functor to Type*
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
free : Type* ⥤ Compactum
monad.free _
def
Compactum.free
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum", "free" ]
The "free" Compactum functor.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
adj : free ⊣ forget
monad.adj _
def
Compactum.adj
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "adj", "free" ]
The adjunction between `free` and `forget`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
str (X : Compactum) : ultrafilter X → X
X.a
def
Compactum.str
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum", "ultrafilter" ]
The structure map for a compactum, essentially sending an ultrafilter to its limit.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
join (X : Compactum) : ultrafilter (ultrafilter X) → ultrafilter X
β .μ.app _
def
Compactum.join
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum", "ultrafilter" ]
The monadic join.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
incl (X : Compactum) : X → ultrafilter X
β .η.app _
def
Compactum.incl
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum", "ultrafilter" ]
The inclusion of `X` into `ultrafilter X`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
str_incl (X : Compactum) (x : X) : X.str (X.incl x) = x
begin change (β .η.app _ ≫ X.a) _ = _, rw monad.algebra.unit, refl, end
lemma
Compactum.str_incl
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
str_hom_commute (X Y : Compactum) (f : X ⟶ Y) (xs : ultrafilter X) : f (X.str xs) = Y.str (map f xs)
begin change (X.a ≫ f.f) _ = _, rw ←f.h, refl, end
lemma
Compactum.str_hom_commute
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum", "ultrafilter" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
join_distrib (X : Compactum) (uux : ultrafilter (ultrafilter X)) : X.str (X.join uux) = X.str (map X.str uux)
begin change (β .μ.app _ ≫ X.a) _ = _, rw monad.algebra.assoc, refl, end
lemma
Compactum.join_distrib
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum", "ultrafilter" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
is_closed_iff {X : Compactum} (S : set X) : is_closed S ↔ (∀ F : ultrafilter X, S ∈ F → X.str F ∈ S)
begin rw ← is_open_compl_iff, split, { intros cond F h, by_contradiction c, specialize cond F c, rw compl_mem_iff_not_mem at cond, contradiction }, { intros h1 F h2, specialize h1 F, cases F.mem_or_compl_mem S, exacts [absurd (h1 h) h2, h] } end
theorem
Compactum.is_closed_iff
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum", "by_contradiction", "is_closed", "is_open_compl_iff", "ultrafilter" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
basic {X : Compactum} (A : set X) : set (ultrafilter X)
{F | A ∈ F}
def
Compactum.basic
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum", "ultrafilter" ]
A local definition used only in the proofs.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
cl {X : Compactum} (A : set X) : set X
X.str '' (basic A)
def
Compactum.cl
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum" ]
A local definition used only in the proofs.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
basic_inter {X : Compactum} (A B : set X) : basic (A ∩ B) = basic A ∩ basic B
begin ext G, split, { intro hG, split; filter_upwards [hG] with _, exacts [and.left, and.right] }, { rintros ⟨h1, h2⟩, exact inter_mem h1 h2 } end
lemma
Compactum.basic_inter
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
subset_cl {X : Compactum} (A : set X) : A ⊆ cl A
λ a ha, ⟨X.incl a, ha,by simp⟩
lemma
Compactum.subset_cl
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
cl_cl {X : Compactum} (A : set X) : cl (cl A) ⊆ cl A
begin rintros _ ⟨F,hF,rfl⟩, -- Notation to be used in this proof. let fsu := finset (set (ultrafilter X)), let ssu := set (set (ultrafilter X)), let ι : fsu → ssu := coe, let C0 : ssu := {Z | ∃ B ∈ F, X.str ⁻¹' B = Z}, let AA := {G : ultrafilter X | A ∈ G}, let C1 := insert AA C0, let C2 := finite_int...
theorem
Compactum.cl_cl
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum", "filter.nonempty_of_mem", "finset", "has_finite_inter", "set.nonempty", "set.preimage_inter", "subtype.val_eq_coe", "ultrafilter" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
is_closed_cl {X : Compactum} (A : set X) : is_closed (cl A)
begin rw is_closed_iff, intros F hF, exact cl_cl _ ⟨F, hF, rfl⟩, end
lemma
Compactum.is_closed_cl
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum", "is_closed" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
str_eq_of_le_nhds {X : Compactum} (F : ultrafilter X) (x : X) : ↑F ≤ 𝓝 x → X.str F = x
begin -- Notation to be used in this proof. let fsu := finset (set (ultrafilter X)), let ssu := set (set (ultrafilter X)), let ι : fsu → ssu := coe, let T0 : ssu := { S | ∃ A ∈ F, S = basic A }, let AA := (X.str ⁻¹' {x}), let T1 := insert AA T0, let T2 := finite_inter_closure T1, intro cond, -- If F...
lemma
Compactum.str_eq_of_le_nhds
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum", "by_contradiction", "finset", "is_closed", "le_nhds_iff", "set.nonempty", "ultrafilter", "ultrafilter.compl_mem_iff_not_mem", "ultrafilter.exists_ultrafilter_of_finite_inter_nonempty", "ultrafilter.mem_coe" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
le_nhds_of_str_eq {X : Compactum} (F : ultrafilter X) (x : X) : X.str F = x → ↑F ≤ 𝓝 x
λ h, le_nhds_iff.mpr (λ s hx hs, hs _ $ by rwa h)
lemma
Compactum.le_nhds_of_str_eq
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum", "ultrafilter" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
Lim_eq_str {X : Compactum} (F : ultrafilter X) : F.Lim = X.str F
begin rw [ultrafilter.Lim_eq_iff_le_nhds, le_nhds_iff], tauto, end
lemma
Compactum.Lim_eq_str
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum", "le_nhds_iff", "ultrafilter", "ultrafilter.Lim_eq_iff_le_nhds" ]
The structure map of a compactum actually computes limits.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
cl_eq_closure {X : Compactum} (A : set X) : cl A = closure A
begin ext, rw mem_closure_iff_ultrafilter, split, { rintro ⟨F, h1, h2⟩, exact ⟨F, h1, le_nhds_of_str_eq _ _ h2⟩ }, { rintro ⟨F, h1, h2⟩, exact ⟨F, h1, str_eq_of_le_nhds _ _ h2⟩ } end
lemma
Compactum.cl_eq_closure
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum", "closure", "mem_closure_iff_ultrafilter" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
continuous_of_hom {X Y : Compactum} (f : X ⟶ Y) : continuous f
begin rw continuous_iff_ultrafilter, intros x _ h, rw [tendsto, ← coe_map], apply le_nhds_of_str_eq, rw [← str_hom_commute, str_eq_of_le_nhds _ x h] end
lemma
Compactum.continuous_of_hom
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum", "continuous", "continuous_iff_ultrafilter" ]
Any morphism of compacta is continuous.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
of_topological_space (X : Type*) [topological_space X] [compact_space X] [t2_space X] : Compactum
{ A := X, a := ultrafilter.Lim, unit' := by {ext x, exact Lim_eq (pure_le_nhds _) }, assoc' := begin ext FF, change ultrafilter (ultrafilter X) at FF, set x := (ultrafilter.map ultrafilter.Lim FF).Lim with c1, have c2 : ∀ (U : set X) (F : ultrafilter X), F.Lim ∈ U → is_open U → U ∈ F, { intros...
def
Compactum.of_topological_space
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum", "Lim", "Lim_eq", "compact_space", "is_open", "is_open.mem_nhds", "le_nhds_iff", "pure_le_nhds", "t2_space", "topological_space", "ultrafilter", "ultrafilter.Lim", "ultrafilter.le_nhds_Lim", "ultrafilter.map" ]
Given any compact Hausdorff space, we construct a Compactum.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
hom_of_continuous {X Y : Compactum} (f : X → Y) (cont : continuous f) : X ⟶ Y
{ f := f, h' := begin rw continuous_iff_ultrafilter at cont, ext (F : ultrafilter X), specialize cont (X.str F) F (le_nhds_of_str_eq F (X.str F) rfl), have := str_eq_of_le_nhds (ultrafilter.map f F) _ cont, simpa only [←this, types_comp_apply, of_type_functor_map], end }
def
Compactum.hom_of_continuous
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum", "cont", "continuous", "continuous_iff_ultrafilter", "ultrafilter", "ultrafilter.map" ]
Any continuous map between Compacta is a morphism of compacta.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
Compactum_to_CompHaus : Compactum ⥤ CompHaus
{ obj := λ X, { to_Top := { α := X } }, map := λ X Y f, { to_fun := f, continuous_to_fun := Compactum.continuous_of_hom _ }}
def
Compactum_to_CompHaus
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "CompHaus", "Compactum", "Compactum.continuous_of_hom" ]
The functor functor from Compactum to CompHaus.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
full : full Compactum_to_CompHaus.{u}
{ preimage := λ X Y f, Compactum.hom_of_continuous f.1 f.2 }
def
Compactum_to_CompHaus.full
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum.hom_of_continuous" ]
The functor Compactum_to_CompHaus is full.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
faithful : faithful Compactum_to_CompHaus
{}
lemma
Compactum_to_CompHaus.faithful
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum_to_CompHaus" ]
The functor Compactum_to_CompHaus is faithful.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
iso_of_topological_space {D : CompHaus} : Compactum_to_CompHaus.obj (Compactum.of_topological_space D) ≅ D
{ hom := { to_fun := id, continuous_to_fun := continuous_def.2 $ λ _ h, by {rw is_open_iff_ultrafilter' at h, exact h} }, inv := { to_fun := id, continuous_to_fun := continuous_def.2 $ λ _ h1, by {rw is_open_iff_ultrafilter', intros _ h2, exact h1 _ h2} } }
def
Compactum_to_CompHaus.iso_of_topological_space
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "CompHaus", "Compactum.of_topological_space", "is_open_iff_ultrafilter'" ]
This definition is used to prove essential surjectivity of Compactum_to_CompHaus.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
ess_surj : ess_surj Compactum_to_CompHaus
{ mem_ess_image := λ X, ⟨Compactum.of_topological_space X, ⟨iso_of_topological_space⟩⟩ }
lemma
Compactum_to_CompHaus.ess_surj
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum_to_CompHaus" ]
The functor Compactum_to_CompHaus is essentially surjective.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
is_equivalence : is_equivalence Compactum_to_CompHaus
begin apply equivalence.of_fully_faithfully_ess_surj _, exact Compactum_to_CompHaus.full, exact Compactum_to_CompHaus.faithful, exact Compactum_to_CompHaus.ess_surj, end
instance
Compactum_to_CompHaus.is_equivalence
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Compactum_to_CompHaus", "Compactum_to_CompHaus.ess_surj", "Compactum_to_CompHaus.faithful", "Compactum_to_CompHaus.full" ]
The functor Compactum_to_CompHaus is an equivalence of categories.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
Compactum_to_CompHaus_comp_forget : Compactum_to_CompHaus ⋙ category_theory.forget CompHaus ≅ Compactum.forget
nat_iso.of_components (λ X, eq_to_iso rfl) $ by { intros X Y f, dsimp, simpa }
def
Compactum_to_CompHaus_comp_forget
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "CompHaus", "Compactum.forget", "Compactum_to_CompHaus", "category_theory.forget" ]
The forgetful functors of `Compactum` and `CompHaus` are compatible via `Compactum_to_CompHaus`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
CompHaus.forget_creates_limits : creates_limits (forget CompHaus)
begin let e : forget CompHaus ≅ Compactum_to_CompHaus.inv ⋙ Compactum.forget := _ ≪≫ iso_whisker_left _ Compactum_to_CompHaus_comp_forget, swap, refine _ ≪≫ functor.associator _ _ _, refine (functor.left_unitor _).symm ≪≫ _, refine iso_whisker_right _ _, exact Compactum_to_CompHaus.as_equivalence.symm.u...
instance
CompHaus.forget_creates_limits
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "CompHaus", "Compactum.forget", "Compactum_to_CompHaus_comp_forget" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
Profinite.forget_creates_limits : creates_limits (forget Profinite)
begin change creates_limits (Profinite_to_CompHaus ⋙ forget _), apply_instance, end
instance
Profinite.forget_creates_limits
topology.category
src/topology/category/Compactum.lean
[ "category_theory.monad.types", "category_theory.monad.limits", "category_theory.equivalence", "topology.category.CompHaus.basic", "topology.category.Profinite.basic", "data.set.constructions" ]
[ "Profinite", "Profinite_to_CompHaus" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
Locale
Frmᵒᵖ
def
Locale
topology.category
src/topology/category/Locale.lean
[ "order.category.Frm" ]
[]
The category of locales.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
of (α : Type*) [frame α] : Locale
op $ Frm.of α
def
Locale.of
topology.category
src/topology/category/Locale.lean
[ "order.category.Frm" ]
[ "Frm.of", "Locale" ]
Construct a bundled `Locale` from a `frame`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
Top_to_Locale : Top ⥤ Locale
Top_op_to_Frame.right_op
def
Top_to_Locale
topology.category
src/topology/category/Locale.lean
[ "order.category.Frm" ]
[ "Locale", "Top" ]
The forgetful functor from `Top` to `Locale` which forgets that the space has "enough points".
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
CompHaus_to_Locale.faithful : faithful (CompHaus_to_Top ⋙ Top_to_Locale.{u})
⟨λ X Y f g h, by { dsimp at h, exact opens.comap_injective (quiver.hom.op_inj h) }⟩
instance
CompHaus_to_Locale.faithful
topology.category
src/topology/category/Locale.lean
[ "order.category.Frm" ]
[ "CompHaus_to_Top", "quiver.hom.op_inj" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
TopCommRing
(α : Type u) [is_comm_ring : comm_ring α] [is_topological_space : topological_space α] [is_topological_ring : topological_ring α]
structure
TopCommRing
topology.category
src/topology/category/TopCommRing.lean
[ "algebra.category.Ring.basic", "topology.category.Top.basic", "topology.algebra.ring.basic" ]
[ "comm_ring", "topological_ring", "topological_space" ]
A bundled topological commutative ring.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
of (X : Type u) [comm_ring X] [topological_space X] [topological_ring X] : TopCommRing
⟨X⟩
def
TopCommRing.of
topology.category
src/topology/category/TopCommRing.lean
[ "algebra.category.Ring.basic", "topology.category.Top.basic", "topology.algebra.ring.basic" ]
[ "TopCommRing", "comm_ring", "topological_ring", "topological_space" ]
Construct a bundled `TopCommRing` from the underlying type and the appropriate typeclasses.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_of (X : Type u) [comm_ring X] [topological_space X] [topological_ring X] : (of X : Type u) = X
rfl
lemma
TopCommRing.coe_of
topology.category
src/topology/category/TopCommRing.lean
[ "algebra.category.Ring.basic", "topology.category.Top.basic", "topology.algebra.ring.basic" ]
[ "comm_ring", "topological_ring", "topological_space" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
forget_topological_space (R : TopCommRing) : topological_space ((forget TopCommRing).obj R)
R.is_topological_space
instance
TopCommRing.forget_topological_space
topology.category
src/topology/category/TopCommRing.lean
[ "algebra.category.Ring.basic", "topology.category.Top.basic", "topology.algebra.ring.basic" ]
[ "TopCommRing", "topological_space" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
forget_comm_ring (R : TopCommRing) : comm_ring ((forget TopCommRing).obj R)
R.is_comm_ring
instance
TopCommRing.forget_comm_ring
topology.category
src/topology/category/TopCommRing.lean
[ "algebra.category.Ring.basic", "topology.category.Top.basic", "topology.algebra.ring.basic" ]
[ "TopCommRing", "comm_ring" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
forget_topological_ring (R : TopCommRing) : topological_ring ((forget TopCommRing).obj R)
R.is_topological_ring
instance
TopCommRing.forget_topological_ring
topology.category
src/topology/category/TopCommRing.lean
[ "algebra.category.Ring.basic", "topology.category.Top.basic", "topology.algebra.ring.basic" ]
[ "TopCommRing", "topological_ring" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
has_forget_to_CommRing : has_forget₂ TopCommRing CommRing
has_forget₂.mk' (λ R, CommRing.of R) (λ x, rfl) (λ R S f, f.val) (λ R S f, heq.rfl)
instance
TopCommRing.has_forget_to_CommRing
topology.category
src/topology/category/TopCommRing.lean
[ "algebra.category.Ring.basic", "topology.category.Top.basic", "topology.algebra.ring.basic" ]
[ "CommRing", "CommRing.of", "TopCommRing" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
forget_to_CommRing_topological_space (R : TopCommRing) : topological_space ((forget₂ TopCommRing CommRing).obj R)
R.is_topological_space
instance
TopCommRing.forget_to_CommRing_topological_space
topology.category
src/topology/category/TopCommRing.lean
[ "algebra.category.Ring.basic", "topology.category.Top.basic", "topology.algebra.ring.basic" ]
[ "CommRing", "TopCommRing", "topological_space" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
has_forget_to_Top : has_forget₂ TopCommRing Top
has_forget₂.mk' (λ R, Top.of R) (λ x, rfl) (λ R S f, ⟨⇑f.1, f.2⟩) (λ R S f, heq.rfl)
instance
TopCommRing.has_forget_to_Top
topology.category
src/topology/category/TopCommRing.lean
[ "algebra.category.Ring.basic", "topology.category.Top.basic", "topology.algebra.ring.basic" ]
[ "Top", "Top.of", "TopCommRing" ]
The forgetful functor to Top.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
forget_to_Top_comm_ring (R : TopCommRing) : comm_ring ((forget₂ TopCommRing Top).obj R)
R.is_comm_ring
instance
TopCommRing.forget_to_Top_comm_ring
topology.category
src/topology/category/TopCommRing.lean
[ "algebra.category.Ring.basic", "topology.category.Top.basic", "topology.algebra.ring.basic" ]
[ "Top", "TopCommRing", "comm_ring" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
forget_to_Top_topological_ring (R : TopCommRing) : topological_ring ((forget₂ TopCommRing Top).obj R)
R.is_topological_ring
instance
TopCommRing.forget_to_Top_topological_ring
topology.category
src/topology/category/TopCommRing.lean
[ "algebra.category.Ring.basic", "topology.category.Top.basic", "topology.algebra.ring.basic" ]
[ "Top", "TopCommRing", "topological_ring" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
UniformSpace : Type (u+1)
bundled uniform_space
def
UniformSpace
topology.category
src/topology/category/UniformSpace.lean
[ "category_theory.adjunction.reflective", "category_theory.concrete_category.unbundled_hom", "category_theory.monad.limits", "topology.category.Top.basic", "topology.uniform_space.completion" ]
[ "uniform_space" ]
A (bundled) uniform space.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
of (α : Type u) [uniform_space α] : UniformSpace
⟨α⟩
def
UniformSpace.of
topology.category
src/topology/category/UniformSpace.lean
[ "category_theory.adjunction.reflective", "category_theory.concrete_category.unbundled_hom", "category_theory.monad.limits", "topology.category.Top.basic", "topology.uniform_space.completion" ]
[ "UniformSpace", "uniform_space" ]
Construct a bundled `UniformSpace` from the underlying type and the typeclass.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_of (X : Type u) [uniform_space X] : (of X : Type u) = X
rfl
lemma
UniformSpace.coe_of
topology.category
src/topology/category/UniformSpace.lean
[ "category_theory.adjunction.reflective", "category_theory.concrete_category.unbundled_hom", "category_theory.monad.limits", "topology.category.Top.basic", "topology.uniform_space.completion" ]
[ "uniform_space" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_comp {X Y Z : UniformSpace} (f : X ⟶ Y) (g : Y ⟶ Z) : (f ≫ g : X → Z) = g ∘ f
rfl
lemma
UniformSpace.coe_comp
topology.category
src/topology/category/UniformSpace.lean
[ "category_theory.adjunction.reflective", "category_theory.concrete_category.unbundled_hom", "category_theory.monad.limits", "topology.category.Top.basic", "topology.uniform_space.completion" ]
[ "UniformSpace" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_id (X : UniformSpace) : (𝟙 X : X → X) = id
rfl
lemma
UniformSpace.coe_id
topology.category
src/topology/category/UniformSpace.lean
[ "category_theory.adjunction.reflective", "category_theory.concrete_category.unbundled_hom", "category_theory.monad.limits", "topology.category.Top.basic", "topology.uniform_space.completion" ]
[ "UniformSpace" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_mk {X Y : UniformSpace} (f : X → Y) (hf : uniform_continuous f) : ((⟨f, hf⟩ : X ⟶ Y) : X → Y) = f
rfl
lemma
UniformSpace.coe_mk
topology.category
src/topology/category/UniformSpace.lean
[ "category_theory.adjunction.reflective", "category_theory.concrete_category.unbundled_hom", "category_theory.monad.limits", "topology.category.Top.basic", "topology.uniform_space.completion" ]
[ "UniformSpace", "uniform_continuous" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83