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dual_id : (bot_hom.id α).dual = top_hom.id _
rfl
lemma
bot_hom.dual_id
order.hom
src/order/hom/bounded.lean
[ "order.hom.basic", "order.bounded_order" ]
[ "bot_hom.id", "top_hom.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
dual_comp (g : bot_hom β γ) (f : bot_hom α β) : (g.comp f).dual = g.dual.comp f.dual
rfl
lemma
bot_hom.dual_comp
order.hom
src/order/hom/bounded.lean
[ "order.hom.basic", "order.bounded_order" ]
[ "bot_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
symm_dual_id : bot_hom.dual.symm (top_hom.id _) = bot_hom.id α
rfl
lemma
bot_hom.symm_dual_id
order.hom
src/order/hom/bounded.lean
[ "order.hom.basic", "order.bounded_order" ]
[ "bot_hom.id", "top_hom.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
symm_dual_comp (g : top_hom βᵒᵈ γᵒᵈ) (f : top_hom αᵒᵈ βᵒᵈ) : bot_hom.dual.symm (g.comp f) = (bot_hom.dual.symm g).comp (bot_hom.dual.symm f)
rfl
lemma
bot_hom.symm_dual_comp
order.hom
src/order/hom/bounded.lean
[ "order.hom.basic", "order.bounded_order" ]
[ "top_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
dual : bounded_order_hom α β ≃ bounded_order_hom αᵒᵈ βᵒᵈ
{ to_fun := λ f, ⟨f.to_order_hom.dual, f.map_bot', f.map_top'⟩, inv_fun := λ f, ⟨order_hom.dual.symm f.to_order_hom, f.map_bot', f.map_top'⟩, left_inv := λ f, ext $ λ a, rfl, right_inv := λ f, ext $ λ a, rfl }
def
bounded_order_hom.dual
order.hom
src/order/hom/bounded.lean
[ "order.hom.basic", "order.bounded_order" ]
[ "bounded_order_hom", "inv_fun" ]
Reinterpret a bounded order homomorphism as a bounded order homomorphism between the dual orders.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
dual_id : (bounded_order_hom.id α).dual = bounded_order_hom.id _
rfl
lemma
bounded_order_hom.dual_id
order.hom
src/order/hom/bounded.lean
[ "order.hom.basic", "order.bounded_order" ]
[ "bounded_order_hom.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
dual_comp (g : bounded_order_hom β γ) (f : bounded_order_hom α β) : (g.comp f).dual = g.dual.comp f.dual
rfl
lemma
bounded_order_hom.dual_comp
order.hom
src/order/hom/bounded.lean
[ "order.hom.basic", "order.bounded_order" ]
[ "bounded_order_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
symm_dual_id : bounded_order_hom.dual.symm (bounded_order_hom.id _) = bounded_order_hom.id α
rfl
lemma
bounded_order_hom.symm_dual_id
order.hom
src/order/hom/bounded.lean
[ "order.hom.basic", "order.bounded_order" ]
[ "bounded_order_hom.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
symm_dual_comp (g : bounded_order_hom βᵒᵈ γᵒᵈ) (f : bounded_order_hom αᵒᵈ βᵒᵈ) : bounded_order_hom.dual.symm (g.comp f) = (bounded_order_hom.dual.symm g).comp (bounded_order_hom.dual.symm f)
rfl
lemma
bounded_order_hom.symm_dual_comp
order.hom
src/order/hom/bounded.lean
[ "order.hom.basic", "order.bounded_order" ]
[ "bounded_order_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
Sup_hom (α β : Type*) [has_Sup α] [has_Sup β]
(to_fun : α → β) (map_Sup' (s : set α) : to_fun (Sup s) = Sup (to_fun '' s))
structure
Sup_hom
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "has_Sup" ]
The type of `⨆`-preserving functions from `α` to `β`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
Inf_hom (α β : Type*) [has_Inf α] [has_Inf β]
(to_fun : α → β) (map_Inf' (s : set α) : to_fun (Inf s) = Inf (to_fun '' s))
structure
Inf_hom
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "has_Inf" ]
The type of `⨅`-preserving functions from `α` to `β`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
frame_hom (α β : Type*) [complete_lattice α] [complete_lattice β] extends inf_top_hom α β
(map_Sup' (s : set α) : to_fun (Sup s) = Sup (to_fun '' s))
structure
frame_hom
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "complete_lattice", "inf_top_hom" ]
The type of frame homomorphisms from `α` to `β`. They preserve finite meets and arbitrary joins.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
complete_lattice_hom (α β : Type*) [complete_lattice α] [complete_lattice β] extends Inf_hom α β
(map_Sup' (s : set α) : to_fun (Sup s) = Sup (to_fun '' s))
structure
complete_lattice_hom
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom", "complete_lattice" ]
The type of complete lattice homomorphisms from `α` to `β`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
Sup_hom_class (F : Type*) (α β : out_param $ Type*) [has_Sup α] [has_Sup β] extends fun_like F α (λ _, β)
(map_Sup (f : F) (s : set α) : f (Sup s) = Sup (f '' s))
class
Sup_hom_class
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "fun_like", "has_Sup" ]
`Sup_hom_class F α β` states that `F` is a type of `⨆`-preserving morphisms. You should extend this class when you extend `Sup_hom`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
Inf_hom_class (F : Type*) (α β : out_param $ Type*) [has_Inf α] [has_Inf β] extends fun_like F α (λ _, β)
(map_Inf (f : F) (s : set α) : f (Inf s) = Inf (f '' s))
class
Inf_hom_class
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "fun_like", "has_Inf" ]
`Inf_hom_class F α β` states that `F` is a type of `⨅`-preserving morphisms. You should extend this class when you extend `Inf_hom`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
frame_hom_class (F : Type*) (α β : out_param $ Type*) [complete_lattice α] [complete_lattice β] extends inf_top_hom_class F α β
(map_Sup (f : F) (s : set α) : f (Sup s) = Sup (f '' s))
class
frame_hom_class
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "complete_lattice", "inf_top_hom_class" ]
`frame_hom_class F α β` states that `F` is a type of frame morphisms. They preserve `⊓` and `⨆`. You should extend this class when you extend `frame_hom`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
complete_lattice_hom_class (F : Type*) (α β : out_param $ Type*) [complete_lattice α] [complete_lattice β] extends Inf_hom_class F α β
(map_Sup (f : F) (s : set α) : f (Sup s) = Sup (f '' s))
class
complete_lattice_hom_class
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom_class", "complete_lattice" ]
`complete_lattice_hom_class F α β` states that `F` is a type of complete lattice morphisms. You should extend this class when you extend `complete_lattice_hom`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
map_supr [has_Sup α] [has_Sup β] [Sup_hom_class F α β] (f : F) (g : ι → α) : f (⨆ i, g i) = ⨆ i, f (g i)
by rw [supr, supr, map_Sup, set.range_comp]
lemma
map_supr
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom_class", "has_Sup", "set.range_comp", "supr" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
map_supr₂ [has_Sup α] [has_Sup β] [Sup_hom_class F α β] (f : F) (g : Π i, κ i → α) : f (⨆ i j, g i j) = ⨆ i j, f (g i j)
by simp_rw map_supr
lemma
map_supr₂
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom_class", "has_Sup", "map_supr" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
map_infi [has_Inf α] [has_Inf β] [Inf_hom_class F α β] (f : F) (g : ι → α) : f (⨅ i, g i) = ⨅ i, f (g i)
by rw [infi, infi, map_Inf, set.range_comp]
lemma
map_infi
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom_class", "has_Inf", "infi", "set.range_comp" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
map_infi₂ [has_Inf α] [has_Inf β] [Inf_hom_class F α β] (f : F) (g : Π i, κ i → α) : f (⨅ i j, g i j) = ⨅ i j, f (g i j)
by simp_rw map_infi
lemma
map_infi₂
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom_class", "has_Inf", "map_infi" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
Sup_hom_class.to_sup_bot_hom_class [complete_lattice α] [complete_lattice β] [Sup_hom_class F α β] : sup_bot_hom_class F α β
{ map_sup := λ f a b, by rw [←Sup_pair, map_Sup, set.image_pair, Sup_pair], map_bot := λ f, by rw [←Sup_empty, map_Sup, set.image_empty, Sup_empty], ..‹Sup_hom_class F α β› }
instance
Sup_hom_class.to_sup_bot_hom_class
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_empty", "Sup_hom_class", "Sup_pair", "complete_lattice", "set.image_empty", "set.image_pair", "sup_bot_hom_class" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
Inf_hom_class.to_inf_top_hom_class [complete_lattice α] [complete_lattice β] [Inf_hom_class F α β] : inf_top_hom_class F α β
{ map_inf := λ f a b, by rw [←Inf_pair, map_Inf, set.image_pair, Inf_pair], map_top := λ f, by rw [←Inf_empty, map_Inf, set.image_empty, Inf_empty], ..‹Inf_hom_class F α β› }
instance
Inf_hom_class.to_inf_top_hom_class
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_empty", "Inf_hom_class", "Inf_pair", "complete_lattice", "inf_top_hom_class", "set.image_empty", "set.image_pair" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
frame_hom_class.to_Sup_hom_class [complete_lattice α] [complete_lattice β] [frame_hom_class F α β] : Sup_hom_class F α β
{ .. ‹frame_hom_class F α β› }
instance
frame_hom_class.to_Sup_hom_class
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom_class", "complete_lattice", "frame_hom_class" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
frame_hom_class.to_bounded_lattice_hom_class [complete_lattice α] [complete_lattice β] [frame_hom_class F α β] : bounded_lattice_hom_class F α β
{ .. ‹frame_hom_class F α β›, ..Sup_hom_class.to_sup_bot_hom_class }
instance
frame_hom_class.to_bounded_lattice_hom_class
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom_class.to_sup_bot_hom_class", "bounded_lattice_hom_class", "complete_lattice", "frame_hom_class" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
complete_lattice_hom_class.to_frame_hom_class [complete_lattice α] [complete_lattice β] [complete_lattice_hom_class F α β] : frame_hom_class F α β
{ .. ‹complete_lattice_hom_class F α β›, ..Inf_hom_class.to_inf_top_hom_class }
instance
complete_lattice_hom_class.to_frame_hom_class
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom_class.to_inf_top_hom_class", "complete_lattice", "complete_lattice_hom_class", "frame_hom_class" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
complete_lattice_hom_class.to_bounded_lattice_hom_class [complete_lattice α] [complete_lattice β] [complete_lattice_hom_class F α β] : bounded_lattice_hom_class F α β
{ ..Sup_hom_class.to_sup_bot_hom_class, ..Inf_hom_class.to_inf_top_hom_class }
instance
complete_lattice_hom_class.to_bounded_lattice_hom_class
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom_class.to_inf_top_hom_class", "Sup_hom_class.to_sup_bot_hom_class", "bounded_lattice_hom_class", "complete_lattice", "complete_lattice_hom_class" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
order_iso_class.to_Sup_hom_class [complete_lattice α] [complete_lattice β] [order_iso_class F α β] : Sup_hom_class F α β
{ map_Sup := λ f s, eq_of_forall_ge_iff $ λ c, by simp only [←le_map_inv_iff, Sup_le_iff, set.ball_image_iff], .. show order_hom_class F α β, from infer_instance }
instance
order_iso_class.to_Sup_hom_class
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom_class", "Sup_le_iff", "complete_lattice", "eq_of_forall_ge_iff", "order_hom_class", "order_iso_class", "set.ball_image_iff" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
order_iso_class.to_Inf_hom_class [complete_lattice α] [complete_lattice β] [order_iso_class F α β] : Inf_hom_class F α β
{ map_Inf := λ f s, eq_of_forall_le_iff $ λ c, by simp only [←map_inv_le_iff, le_Inf_iff, set.ball_image_iff], .. show order_hom_class F α β, from infer_instance }
instance
order_iso_class.to_Inf_hom_class
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom_class", "complete_lattice", "eq_of_forall_le_iff", "le_Inf_iff", "order_hom_class", "order_iso_class", "set.ball_image_iff" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
order_iso_class.to_complete_lattice_hom_class [complete_lattice α] [complete_lattice β] [order_iso_class F α β] : complete_lattice_hom_class F α β
{ ..order_iso_class.to_Sup_hom_class, ..order_iso_class.to_lattice_hom_class, .. show Inf_hom_class F α β, from infer_instance }
instance
order_iso_class.to_complete_lattice_hom_class
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom_class", "complete_lattice", "complete_lattice_hom_class", "order_iso_class", "order_iso_class.to_Sup_hom_class", "order_iso_class.to_lattice_hom_class" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
to_fun_eq_coe {f : Sup_hom α β} : f.to_fun = (f : α → β)
rfl
lemma
Sup_hom.to_fun_eq_coe
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
ext {f g : Sup_hom α β} (h : ∀ a, f a = g a) : f = g
fun_like.ext f g h
lemma
Sup_hom.ext
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom", "fun_like.ext" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
copy (f : Sup_hom α β) (f' : α → β) (h : f' = f) : Sup_hom α β
{ to_fun := f', map_Sup' := h.symm ▸ f.map_Sup' }
def
Sup_hom.copy
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom" ]
Copy of a `Sup_hom` 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 : Sup_hom α β) (f' : α → β) (h : f' = f) : ⇑(f.copy f' h) = f'
rfl
lemma
Sup_hom.coe_copy
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
copy_eq (f : Sup_hom α β) (f' : α → β) (h : f' = f) : f.copy f' h = f
fun_like.ext' h
lemma
Sup_hom.copy_eq
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom", "fun_like.ext'" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
id : Sup_hom α α
⟨id, λ s, by rw [id, set.image_id]⟩
def
Sup_hom.id
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom", "set.image_id" ]
`id` as a `Sup_hom`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_id : ⇑(Sup_hom.id α) = id
rfl
lemma
Sup_hom.coe_id
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
id_apply (a : α) : Sup_hom.id α a = a
rfl
lemma
Sup_hom.id_apply
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
comp (f : Sup_hom β γ) (g : Sup_hom α β) : Sup_hom α γ
{ to_fun := f ∘ g, map_Sup' := λ s, by rw [comp_apply, map_Sup, map_Sup, set.image_image] }
def
Sup_hom.comp
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom", "set.image_image" ]
Composition of `Sup_hom`s as a `Sup_hom`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_comp (f : Sup_hom β γ) (g : Sup_hom α β) : ⇑(f.comp g) = f ∘ g
rfl
lemma
Sup_hom.coe_comp
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
comp_apply (f : Sup_hom β γ) (g : Sup_hom α β) (a : α) : (f.comp g) a = f (g a)
rfl
lemma
Sup_hom.comp_apply
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
comp_assoc (f : Sup_hom γ δ) (g : Sup_hom β γ) (h : Sup_hom α β) : (f.comp g).comp h = f.comp (g.comp h)
rfl
lemma
Sup_hom.comp_assoc
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
comp_id (f : Sup_hom α β) : f.comp (Sup_hom.id α) = f
ext $ λ a, rfl
lemma
Sup_hom.comp_id
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom", "Sup_hom.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
id_comp (f : Sup_hom α β) : (Sup_hom.id β).comp f = f
ext $ λ a, rfl
lemma
Sup_hom.id_comp
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom", "Sup_hom.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
cancel_right {g₁ g₂ : Sup_hom β γ} {f : Sup_hom 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
Sup_hom.cancel_right
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
cancel_left {g : Sup_hom β γ} {f₁ f₂ : Sup_hom 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
Sup_hom.cancel_left
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_bot : ⇑(⊥ : Sup_hom α β) = ⊥
rfl
lemma
Sup_hom.coe_bot
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
bot_apply (a : α) : (⊥ : Sup_hom α β) a = ⊥
rfl
lemma
Sup_hom.bot_apply
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
to_fun_eq_coe {f : Inf_hom α β} : f.to_fun = (f : α → β)
rfl
lemma
Inf_hom.to_fun_eq_coe
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
ext {f g : Inf_hom α β} (h : ∀ a, f a = g a) : f = g
fun_like.ext f g h
lemma
Inf_hom.ext
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom", "fun_like.ext" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
copy (f : Inf_hom α β) (f' : α → β) (h : f' = f) : Inf_hom α β
{ to_fun := f', map_Inf' := h.symm ▸ f.map_Inf' }
def
Inf_hom.copy
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom" ]
Copy of a `Inf_hom` 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 : Inf_hom α β) (f' : α → β) (h : f' = f) : ⇑(f.copy f' h) = f'
rfl
lemma
Inf_hom.coe_copy
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
copy_eq (f : Inf_hom α β) (f' : α → β) (h : f' = f) : f.copy f' h = f
fun_like.ext' h
lemma
Inf_hom.copy_eq
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom", "fun_like.ext'" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
id : Inf_hom α α
⟨id, λ s, by rw [id, set.image_id]⟩
def
Inf_hom.id
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom", "set.image_id" ]
`id` as an `Inf_hom`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_id : ⇑(Inf_hom.id α) = id
rfl
lemma
Inf_hom.coe_id
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
id_apply (a : α) : Inf_hom.id α a = a
rfl
lemma
Inf_hom.id_apply
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
comp (f : Inf_hom β γ) (g : Inf_hom α β) : Inf_hom α γ
{ to_fun := f ∘ g, map_Inf' := λ s, by rw [comp_apply, map_Inf, map_Inf, set.image_image] }
def
Inf_hom.comp
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom", "set.image_image" ]
Composition of `Inf_hom`s as a `Inf_hom`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_comp (f : Inf_hom β γ) (g : Inf_hom α β) : ⇑(f.comp g) = f ∘ g
rfl
lemma
Inf_hom.coe_comp
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
comp_apply (f : Inf_hom β γ) (g : Inf_hom α β) (a : α) : (f.comp g) a = f (g a)
rfl
lemma
Inf_hom.comp_apply
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
comp_assoc (f : Inf_hom γ δ) (g : Inf_hom β γ) (h : Inf_hom α β) : (f.comp g).comp h = f.comp (g.comp h)
rfl
lemma
Inf_hom.comp_assoc
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
comp_id (f : Inf_hom α β) : f.comp (Inf_hom.id α) = f
ext $ λ a, rfl
lemma
Inf_hom.comp_id
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom", "Inf_hom.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
id_comp (f : Inf_hom α β) : (Inf_hom.id β).comp f = f
ext $ λ a, rfl
lemma
Inf_hom.id_comp
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom", "Inf_hom.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
cancel_right {g₁ g₂ : Inf_hom β γ} {f : Inf_hom 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
Inf_hom.cancel_right
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
cancel_left {g : Inf_hom β γ} {f₁ f₂ : Inf_hom 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
Inf_hom.cancel_left
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_top : ⇑(⊤ : Inf_hom α β) = ⊤
rfl
lemma
Inf_hom.coe_top
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
top_apply (a : α) : (⊤ : Inf_hom α β) a = ⊤
rfl
lemma
Inf_hom.top_apply
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
to_lattice_hom (f : frame_hom α β) : lattice_hom α β
f
def
frame_hom.to_lattice_hom
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "frame_hom", "lattice_hom" ]
Reinterpret a `frame_hom` as a `lattice_hom`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
to_fun_eq_coe {f : frame_hom α β} : f.to_fun = (f : α → β)
rfl
lemma
frame_hom.to_fun_eq_coe
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "frame_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
ext {f g : frame_hom α β} (h : ∀ a, f a = g a) : f = g
fun_like.ext f g h
lemma
frame_hom.ext
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "frame_hom", "fun_like.ext" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
copy (f : frame_hom α β) (f' : α → β) (h : f' = f) : frame_hom α β
{ to_inf_top_hom := f.to_inf_top_hom.copy f' h, ..(f : Sup_hom α β).copy f' h }
def
frame_hom.copy
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom", "frame_hom" ]
Copy of a `frame_hom` 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 : frame_hom α β) (f' : α → β) (h : f' = f) : ⇑(f.copy f' h) = f'
rfl
lemma
frame_hom.coe_copy
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "frame_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
copy_eq (f : frame_hom α β) (f' : α → β) (h : f' = f) : f.copy f' h = f
fun_like.ext' h
lemma
frame_hom.copy_eq
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "frame_hom", "fun_like.ext'" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
id : frame_hom α α
{ to_inf_top_hom := inf_top_hom.id α, ..Sup_hom.id α }
def
frame_hom.id
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom.id", "frame_hom", "inf_top_hom.id" ]
`id` as a `frame_hom`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_id : ⇑(frame_hom.id α) = id
rfl
lemma
frame_hom.coe_id
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "frame_hom.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
id_apply (a : α) : frame_hom.id α a = a
rfl
lemma
frame_hom.id_apply
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "frame_hom.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
comp (f : frame_hom β γ) (g : frame_hom α β) : frame_hom α γ
{ to_inf_top_hom := f.to_inf_top_hom.comp g.to_inf_top_hom, ..(f : Sup_hom β γ).comp (g : Sup_hom α β) }
def
frame_hom.comp
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom", "frame_hom" ]
Composition of `frame_hom`s as a `frame_hom`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_comp (f : frame_hom β γ) (g : frame_hom α β) : ⇑(f.comp g) = f ∘ g
rfl
lemma
frame_hom.coe_comp
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "frame_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
comp_apply (f : frame_hom β γ) (g : frame_hom α β) (a : α) : (f.comp g) a = f (g a)
rfl
lemma
frame_hom.comp_apply
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "frame_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
comp_assoc (f : frame_hom γ δ) (g : frame_hom β γ) (h : frame_hom α β) : (f.comp g).comp h = f.comp (g.comp h)
rfl
lemma
frame_hom.comp_assoc
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "frame_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
comp_id (f : frame_hom α β) : f.comp (frame_hom.id α) = f
ext $ λ a, rfl
lemma
frame_hom.comp_id
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "frame_hom", "frame_hom.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
id_comp (f : frame_hom α β) : (frame_hom.id β).comp f = f
ext $ λ a, rfl
lemma
frame_hom.id_comp
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "frame_hom", "frame_hom.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
cancel_right {g₁ g₂ : frame_hom β γ} {f : frame_hom 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
frame_hom.cancel_right
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "frame_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
cancel_left {g : frame_hom β γ} {f₁ f₂ : frame_hom 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
frame_hom.cancel_left
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "frame_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
to_Sup_hom (f : complete_lattice_hom α β) : Sup_hom α β
f
def
complete_lattice_hom.to_Sup_hom
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Sup_hom", "complete_lattice_hom" ]
Reinterpret a `complete_lattice_hom` as a `Sup_hom`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
to_bounded_lattice_hom (f : complete_lattice_hom α β) : bounded_lattice_hom α β
f
def
complete_lattice_hom.to_bounded_lattice_hom
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "bounded_lattice_hom", "complete_lattice_hom" ]
Reinterpret a `complete_lattice_hom` as a `bounded_lattice_hom`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
to_fun_eq_coe {f : complete_lattice_hom α β} : f.to_fun = (f : α → β)
rfl
lemma
complete_lattice_hom.to_fun_eq_coe
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "complete_lattice_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
ext {f g : complete_lattice_hom α β} (h : ∀ a, f a = g a) : f = g
fun_like.ext f g h
lemma
complete_lattice_hom.ext
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "complete_lattice_hom", "fun_like.ext" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
copy (f : complete_lattice_hom α β) (f' : α → β) (h : f' = f) : complete_lattice_hom α β
{ to_Inf_hom := f.to_Inf_hom.copy f' h, .. f.to_Sup_hom.copy f' h }
def
complete_lattice_hom.copy
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "complete_lattice_hom" ]
Copy of a `complete_lattice_hom` 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 : complete_lattice_hom α β) (f' : α → β) (h : f' = f) : ⇑(f.copy f' h) = f'
rfl
lemma
complete_lattice_hom.coe_copy
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "complete_lattice_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
copy_eq (f : complete_lattice_hom α β) (f' : α → β) (h : f' = f) : f.copy f' h = f
fun_like.ext' h
lemma
complete_lattice_hom.copy_eq
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "complete_lattice_hom", "fun_like.ext'" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
id : complete_lattice_hom α α
{ to_fun := id, ..Sup_hom.id α, ..Inf_hom.id α }
def
complete_lattice_hom.id
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "Inf_hom.id", "Sup_hom.id", "complete_lattice_hom" ]
`id` as a `complete_lattice_hom`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_id : ⇑(complete_lattice_hom.id α) = id
rfl
lemma
complete_lattice_hom.coe_id
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "complete_lattice_hom.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
id_apply (a : α) : complete_lattice_hom.id α a = a
rfl
lemma
complete_lattice_hom.id_apply
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "complete_lattice_hom.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
comp (f : complete_lattice_hom β γ) (g : complete_lattice_hom α β) : complete_lattice_hom α γ
{ to_Inf_hom := f.to_Inf_hom.comp g.to_Inf_hom, ..f.to_Sup_hom.comp g.to_Sup_hom }
def
complete_lattice_hom.comp
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "complete_lattice_hom" ]
Composition of `complete_lattice_hom`s as a `complete_lattice_hom`.
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
coe_comp (f : complete_lattice_hom β γ) (g : complete_lattice_hom α β) : ⇑(f.comp g) = f ∘ g
rfl
lemma
complete_lattice_hom.coe_comp
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "complete_lattice_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
comp_apply (f : complete_lattice_hom β γ) (g : complete_lattice_hom α β) (a : α) : (f.comp g) a = f (g a)
rfl
lemma
complete_lattice_hom.comp_apply
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "complete_lattice_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
comp_assoc (f : complete_lattice_hom γ δ) (g : complete_lattice_hom β γ) (h : complete_lattice_hom α β) : (f.comp g).comp h = f.comp (g.comp h)
rfl
lemma
complete_lattice_hom.comp_assoc
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "complete_lattice_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
comp_id (f : complete_lattice_hom α β) : f.comp (complete_lattice_hom.id α) = f
ext $ λ a, rfl
lemma
complete_lattice_hom.comp_id
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "complete_lattice_hom", "complete_lattice_hom.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
id_comp (f : complete_lattice_hom α β) : (complete_lattice_hom.id β).comp f = f
ext $ λ a, rfl
lemma
complete_lattice_hom.id_comp
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "complete_lattice_hom", "complete_lattice_hom.id" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83
cancel_right {g₁ g₂ : complete_lattice_hom β γ} {f : complete_lattice_hom 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
complete_lattice_hom.cancel_right
order.hom
src/order/hom/complete_lattice.lean
[ "data.set.lattice", "order.hom.lattice" ]
[ "complete_lattice_hom" ]
https://github.com/leanprover-community/mathlib
65a1391a0106c9204fe45bc73a039f056558cb83