F
M.a |
F 
a | 
f2 FN.a | F Fconcl.a |= F 
FM.a | F FN.a | F a |= f2 Fconcl.a |= F f2.N),concl > a |= < M @ N,f2.concl > 
i.
UnfoldTopAb i THEN AbReduce i
THEN
Rewrite
(HigherC
(LemmaC
Thm* 
P:(T
Prop), L,M:T List.
x(L @ M).P(x) 
xL.P(x) xM.P(x)))
i
THEN
AbReduce i)| 1 | 6. FM.a | F a | f2 FN.a | F Fconcl.a |= F FM.a | F FN.a | F a |= f2 Fconcl.a |= F |
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