Step
*
of Lemma
relclosed-set_wf
∀[R:Set{i:l} ⟶ Set{i:l} ⟶ ℙ']. ∀[s:Set{i:l}].  (closed(x,a.R[x;a])s ∈ ℙ')
BY
{ ProveWfLemma }
Latex:
Latex:
\mforall{}[R:Set\{i:l\}  {}\mrightarrow{}  Set\{i:l\}  {}\mrightarrow{}  \mBbbP{}'].  \mforall{}[s:Set\{i:l\}].    (closed(x,a.R[x;a])s  \mmember{}  \mBbbP{}')
By
Latex:
ProveWfLemma
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