At: back listify 1 1 2 1 1 2 1
1. Alph: Type
2. S: ActionSet(Alph)
3. s: S.car
4. Fin(Alph)
5. Fin(S.car)
6. LL: (S.car
S.car*)*
7. u1: S.car
8. u2: S.car*
9. v: (S.carS.car*)*
10. BL: S.car*
11. 
t:S.car. mem_f(S.car;t;BL) 
(
i:
||v||. 1of(v[i]) = t & mem_f(S.car;s;2of(v[i])))
12. mem_f(S.car;s;u2)
13. t: S.car
14. i: (||v||+1)
15. 1of(( < u1,u2 > .v)[i]) = t & mem_f(S.car;s;2of(( < u1,u2 > .v)[i]))
16. i = 0
u1 = t 
mem_f(S.car;t;BL)
By:
RWH (HypC -1) -2
THEN
Reduce -2
THEN
ProveProp
Generated subgoals:None
About:
