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Step * of Lemma permutation-swap-first2

∀[A:Type]. ∀x,y:A. ∀L:A List.  permutation(A;[x; [y / L]];[y; [x / L]])
BY
{ (Auto THEN BLemma `permutation-cons` THEN Auto THEN InstConcl [⌜[y]⌝;⌜L⌝]⋅ THEN Reduce 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[A:Type].  \mforall{}x,y:A.  \mforall{}L:A  List.    permutation(A;[x;  [y  /  L]];[y;  [x  /  L]])


By

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Latex:
(Auto  THEN  BLemma  `permutation-cons`  THEN  Auto  THEN  InstConcl  [\mkleeneopen{}[y]\mkleeneclose{};\mkleeneopen{}L\mkleeneclose{}]\mcdot{}  THEN  Reduce  0  THEN  Auto)

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