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Step * of Lemma singleset_wf2

∀[a:Set{i:l}]. ({a} ∈ Set{i:l})
BY
{ (ProveWfLemma THEN Fold `mkset` 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[a:Set\{i:l\}].  (\{a\}  \mmember{}  Set\{i:l\})


By

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Latex:
(ProveWfLemma  THEN  Fold  `mkset`  0  THEN  Auto)

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