Step
*
of Lemma
decide-trivial
∀[x:Top + Top]. ∀[y:Top]. (case x of inl(z) => y | inr(z) => y ~ y)
BY
{ ((D 0 THENA Auto) THEN (D -1 THENA Auto) THEN Reduce 0 THEN Auto) }
Latex:
Latex:
\mforall{}[x:Top + Top]. \mforall{}[y:Top]. (case x of inl(z) => y | inr(z) => y \msim{} y)
By
Latex:
((D 0 THENA Auto) THEN (D -1 THENA Auto) THEN Reduce 0 THEN Auto)
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