Step
*
of Lemma
last-map
∀[as:Top List]. ∀[f:Top]. last(map(f;as)) ~ f last(as) supposing ¬↑null(as)
BY
{ TACTIC:((((UnivCD THENA Auto) THEN Unfold `last` 0 THEN RWO "length-map" 0) THENA Auto)
THEN RWO "select-map" 0
THEN Auto) }
Latex:
Latex:
\mforall{}[as:Top List]. \mforall{}[f:Top]. last(map(f;as)) \msim{} f last(as) supposing \mneg{}\muparrow{}null(as)
By
Latex:
TACTIC:((((UnivCD THENA Auto) THEN Unfold `last` 0 THEN RWO "length-map" 0) THENA Auto)
THEN RWO "select-map" 0
THEN Auto)
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