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Step * of Lemma comb_for_rng_mssum_wf

λs,r,f,a,z. Σx ∈ a. f[x] ∈ s:DSet ⟶ r:Rng ⟶ f:(|s| ⟶ |r|) ⟶ a:MSet{s} ⟶ (↓True) ⟶ |r|
BY
{ ProveOpCombTyping `rng_mssum_wf` }

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Latex:

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Latex:
\mlambda{}s,r,f,a,z.  \mSigma{}x  \mmember{}  a.  f[x]  \mmember{}  s:DSet  {}\mrightarrow{}  r:Rng  {}\mrightarrow{}  f:(|s|  {}\mrightarrow{}  |r|)  {}\mrightarrow{}  a:MSet\{s\}  {}\mrightarrow{}  (\mdownarrow{}True)  {}\mrightarrow{}  |r|


By

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Latex:
ProveOpCombTyping  `rng\_mssum\_wf`

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