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Step * of Lemma nat-deq-aux

∀[a,b:ℕ].  uiff(a = b ∈ ℕ;↑(a =z b))
BY
{ ((UnivCD THENA Auto) THEN RW assert_pushdownC 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[a,b:\mBbbN{}].    uiff(a  =  b;\muparrow{}(a  =\msubz{}  b))


By

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Latex:
((UnivCD  THENA  Auto)  THEN  RW  assert\_pushdownC  0  THEN  Auto)

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