Step
*
1
1
of Lemma
perm_igrp_wf
1. T : Type
⊢ Assoc(Perm(T);λp,q. p O q)
BY
{ (Unfold `assoc` 0 THEN AbReduce 0) }
1
1. T : Type
⊢ ∀[x,y,z:Perm(T)]. (x O y O z = x O y O z ∈ Perm(T))
Latex:
Latex:
1. T : Type
\mvdash{} Assoc(Perm(T);\mlambda{}p,q. p O q)
By
Latex:
(Unfold `assoc` 0 THEN AbReduce 0)
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