English
For f: X → Y and g: Y → Z in Lat, Lat.ofHom(g ∘ f) = Lat.ofHom(f) ≫ Lat.ofHom(g).
Русский
Для f: X → Y и g: Y → Z в Lat, Lat.ofHom(g ∘ f) = Lat.ofHom(f) ∘ Lat.ofHom(g).
LaTeX
$$$ \mathrm{ofHom}(g \circ f) = \mathrm{ofHom}(f) \circ \mathrm{ofHom}(g) $$$
Lean4
@[simp]
theorem ofHom_comp {X Y Z : Type u} [Lattice X] [Lattice Y] [Lattice Z] (f : LatticeHom X Y) (g : LatticeHom Y Z) :
ofHom (g.comp f) = ofHom f ≫ ofHom g :=
rfl