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Step * of Lemma co-list-subtype2

∀[T:Type]. ((Unit ⋃ (T × colist(T))) ⊆r colist(T))
BY
{ (InstLemma `co-list-ext` [] THEN ParallelLast THEN D -1 THEN Auto) }

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Latex:

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Latex:
\mforall{}[T:Type].  ((Unit  \mcup{}  (T  \mtimes{}  colist(T)))  \msubseteq{}r  colist(T))


By

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Latex:
(InstLemma  `co-list-ext`  []  THEN  ParallelLast  THEN  D  -1  THEN  Auto)

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