Step * 1 of Lemma s_hd_cons_lemma


1. Top@i
2. Top@i
⊢ s-hd(a.b) a
BY
Try (RW (AddrC [1] (UnfoldsC ``s-hd s-cons`` ANDTHENC ReduceC)) 0)⋅ }

1
1. Top@i
2. Top@i
⊢ a


Latex:


Latex:

1.  b  :  Top@i
2.  a  :  Top@i
\mvdash{}  s-hd(a.b)  \msim{}  a


By


Latex:
Try  (RW  (AddrC  [1]  (UnfoldsC  ``s-hd  s-cons``  ANDTHENC  ReduceC))  0)\mcdot{}




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