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Step * of Lemma int-discrete

discrete-type(ℤ)
BY
{ (InstLemma `extensional-discrete-real-fun-is-constant` []
   THEN (D 0 THEN Auto)
   THEN InstHyp [⌜rmin(x;y)⌝;⌜rmax(x;y)⌝;⌜f⌝] 1⋅
   THEN Auto) }

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Latex:

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Latex:
discrete-type(\mBbbZ{})


By

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Latex:
(InstLemma  `extensional-discrete-real-fun-is-constant`  []
  THEN  (D  0  THEN  Auto)
  THEN  InstHyp  [\mkleeneopen{}rmin(x;y)\mkleeneclose{};\mkleeneopen{}rmax(x;y)\mkleeneclose{};\mkleeneopen{}f\mkleeneclose{}]  1\mcdot{}
  THEN  Auto)

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