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Step * of Lemma last_singleton2

∀[x:Top]. (last([x]) ~ x)
BY
{ (Auto THEN RepUR ``last`` 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[x:Top].  (last([x])  \msim{}  x)


By

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Latex:
(Auto  THEN  RepUR  ``last``  0  THEN  Auto)

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