Step
*
of Lemma
mset_for_functionality
∀s:DSet. ∀g:IAbMonoid. ∀f,f':|s| ⟶ |g|. ∀a,a':MSet{s}.
((a = a' ∈ MSet{s})
⇒ (∀x:|s|. ((↑(x ∈b a))
⇒ (f[x] = f'[x] ∈ |g|)))
⇒ ((msFor{g} x ∈ a. f[x]) = (msFor{g} x ∈ a'. f'[x]) ∈ |g|))
BY
{ ((RepD) THENA Auto) }
1
1. s : DSet
2. g : IAbMonoid
3. f : |s| ⟶ |g|
4. f' : |s| ⟶ |g|
5. a : MSet{s}
6. a' : MSet{s}
7. a = a' ∈ MSet{s}
8. ∀x:|s|. ((↑(x ∈b a))
⇒ (f[x] = f'[x] ∈ |g|))
⊢ (msFor{g} x ∈ a. f[x]) = (msFor{g} x ∈ a'. f'[x]) ∈ |g|
Latex:
Latex:
\mforall{}s:DSet. \mforall{}g:IAbMonoid. \mforall{}f,f':|s| {}\mrightarrow{} |g|. \mforall{}a,a':MSet\{s\}.
((a = a')
{}\mRightarrow{} (\mforall{}x:|s|. ((\muparrow{}(x \mmember{}\msubb{} a)) {}\mRightarrow{} (f[x] = f'[x])))
{}\mRightarrow{} ((msFor\{g\} x \mmember{} a. f[x]) = (msFor\{g\} x \mmember{} a'. f'[x])))
By
Latex:
((RepD) THENA Auto)
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