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Step * of Lemma comb_for_mset_for_wf

λs,g,f,a,z. (msFor{g} x ∈ a. f[x]) ∈ s:DSet ⟶ g:IAbMonoid ⟶ f:(|s| ⟶ |g|) ⟶ a:MSet{s} ⟶ (↓True) ⟶ |g|
BY
{ ProveOpCombTyping `mset_for_wf` }

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Latex:

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Latex:
\mlambda{}s,g,f,a,z.  (msFor\{g\}  x  \mmember{}  a.  f[x])  \mmember{}  s:DSet  {}\mrightarrow{}  g:IAbMonoid  {}\mrightarrow{}  f:(|s|  {}\mrightarrow{}  |g|)  {}\mrightarrow{}  a:MSet\{s\}  {}\mrightarrow{}  (\mdownarrow{}True)\000C  {}\mrightarrow{}  |g|


By

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Latex:
ProveOpCombTyping  `mset\_for\_wf`

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