At: reach aux 1 1 1 1 2 1
1. Alph: Type
2. S: ActionSet(Alph)
3. si: S.car
4. Fin(S.car)
5. n: 
6. f:
n
Alph
7. g: Alph

n
8. InvFuns(
n; Alph; f; g)
9. n1: 
10. f1:
n1
S.car
11. g1: S.car

n1
12. InvFuns(
n1; S.car; f1; g1)
13. RL: {y:{x:(S.car*)| 0 < ||x|| & ||x||
n1+1 }| y[(||y||-1)] = si }
14. ||RL|| = n1+1
15.
i:
||RL||, j:
i.
RL[i] = RL[j]
16.
s:S.car. mem_f(S.car;s;RL) 
(
w:Alph*. (S:w
si) = s)
1
n1
By: Assert (g1(si)
n1)
Generated subgoals:None
About: