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Step * 1 of Lemma one_or_both_oobleft_lemma


1. right : Top@i
2. left : Top@i
3. both : Top@i
4. lval : Top@i
⊢ one_or_both_ind(oobleft(lval);bval.both[bval];lval.left[lval];rval.right[rval]) ~ left[lval]
BY
{ Try (RW (AddrC [1] (UnfoldC `oobleft` ANDTHENC UnfoldC `one_or_both_ind` ANDTHENC ReduceC)) 0)⋅ }

1
1. right : Top@i
2. left : Top@i
3. both : Top@i
4. lval : Top@i
⊢ left[lval] ~ left[lval]

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Latex:

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Latex:

1.  right  :  Top@i
2.  left  :  Top@i
3.  both  :  Top@i
4.  lval  :  Top@i
\mvdash{}  one\_or\_both\_ind(oobleft(lval);bval.both[bval];lval.left[lval];rval.right[rval])  \msim{}  left[lval]


By

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Latex:
Try  (RW  (AddrC  [1]  (UnfoldC  `oobleft`  ANDTHENC  UnfoldC  `one\_or\_both\_ind`  ANDTHENC  ReduceC))  0)\mcdot{}

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