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Step * 1 of Lemma reduce_hd_cons_lemma


1. b : Top
2. a : Top
⊢ hd([a / b]) ~ a
BY
{ Computation }

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Latex:

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Latex:

1.  b  :  Top
2.  a  :  Top
\mvdash{}  hd([a  /  b])  \msim{}  a


By

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Latex:
Computation

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