Step
*
of Lemma
cat_comp_assoc
∀[C:SmallCategory]
∀x,y,z,w:cat-ob(C). ∀f:cat-arrow(C) x y. ∀g:cat-arrow(C) y z. ∀h:cat-arrow(C) z w.
(h o g o f = h o g o f ∈ (cat-arrow(C) x w))
BY
{ ((Unfold `cat_comp` 0 THEN Auto) THEN BLemma `cat-comp-assoc`) }
Latex:
Latex:
\mforall{}[C:SmallCategory]
\mforall{}x,y,z,w:cat-ob(C). \mforall{}f:cat-arrow(C) x y. \mforall{}g:cat-arrow(C) y z. \mforall{}h:cat-arrow(C) z w.
(h o g o f = h o g o f)
By
Latex:
((Unfold `cat\_comp` 0 THEN Auto) THEN BLemma `cat-comp-assoc`)
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