Step * 1 of Lemma cat_arrow_triple_lemma


1. Top
2. Top
3. ob Top
⊢ cat-arrow(<ob, x, y>x
BY
Try (RW (AddrC [1] (UnfoldC `cat-arrow` ANDTHENC ReduceC)) 0)⋅ }

1
1. Top
2. Top
3. ob Top
⊢ x


Latex:


Latex:

1.  y  :  Top
2.  x  :  Top
3.  ob  :  Top
\mvdash{}  cat-arrow(<ob,  x,  y>)  \msim{}  x


By


Latex:
Try  (RW  (AddrC  [1]  (UnfoldC  `cat-arrow`  ANDTHENC  ReduceC))  0)\mcdot{}




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