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Step * of Lemma weak-konig-lemma!

WKL!
BY
{ (BLemma `fan-iff-wkl!`
   THEN BLemma `fan-iff-dfan-bool`
   THEN (D 0 THEN Auto)
   THEN D -1
   THEN (InstLemma `fan-theorem` [⌜X⌝]⋅⋅ THENA Auto)
   THEN D (-1)
   THEN With ⌜k⌝ (D 0)⋅
   THEN Auto) }

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Latex:

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Latex:
WKL!


By

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Latex:
(BLemma  `fan-iff-wkl!`
  THEN  BLemma  `fan-iff-dfan-bool`
  THEN  (D  0  THEN  Auto)
  THEN  D  -1
  THEN  (InstLemma  `fan-theorem`  [\mkleeneopen{}X\mkleeneclose{}]\mcdot{}\mcdot{}  THENA  Auto)
  THEN  D  (-1)
  THEN  With  \mkleeneopen{}k\mkleeneclose{}  (D  0)\mcdot{}
  THEN  Auto)

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