Step * 1 1 1 of Lemma oalist_hgrp_eqs


1. LOSet@i'
2. OGrp@i'
3. a1 |oal(s;g↓hgrp)|@i
4. a2 |oal(s;g↓hgrp)|@i
5. a1 a2 ∈ |oal(s;g)|@i
⊢ strong-subtype(|g|+;|g|)
BY
(ProveStrongSubtype THEN Auto) }


Latex:


Latex:

1.  s  :  LOSet@i'
2.  g  :  OGrp@i'
3.  a1  :  |oal(s;g\mdownarrow{}hgrp)|@i
4.  a2  :  |oal(s;g\mdownarrow{}hgrp)|@i
5.  a1  =  a2@i
\mvdash{}  strong-subtype(|g|\msupplus{};|g|)


By


Latex:
(ProveStrongSubtype  THEN  Auto)




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