F
M.a |
F 
a | q
r FN.a | F Fconcl.a |= F 
a | r FM.a | F FN.a | F Fconcl.a |= F r.N),concl > a |= < r.(M @ N),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 | 7. FM.a | F a | qr FN.a | F Fconcl.a |= F a | r FM.a | F FN.a | F Fconcl.a |= F |
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