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Step * 1 1 1 of Lemma Legendre_0_lemma


1. x : Top
⊢ r1 ~ r1
BY
{ Try SqEqCD }

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Latex:

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Latex:

1.  x  :  Top
\mvdash{}  r1  \msim{}  r1


By

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Latex:
Try  SqEqCD

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