Step
*
of Lemma
mem_iff_mem_f
∀s:DSet. ∀a:|s|. ∀bs:|s| List. (↑(a ∈b bs)
⇐⇒ mem_f(|s|;a;bs))
BY
{ (InductionOnListA THEN Reduce 0 THEN Try ((RW bool_to_propC 0 THENM RWH (HypC 5) 0)) THEN Auto) }
Latex:
Latex:
\mforall{}s:DSet. \mforall{}a:|s|. \mforall{}bs:|s| List. (\muparrow{}(a \mmember{}\msubb{} bs) \mLeftarrow{}{}\mRightarrow{} mem\_f(|s|;a;bs))
By
Latex:
(InductionOnListA THEN Reduce 0 THEN Try ((RW bool\_to\_propC 0 THENM RWH (HypC 5) 0)) THEN Auto)
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