At: nd auto eq auto 1 1 2 1 1 1 1 1 1 1 1 1 1
1. Alph: Type
2. St: Type
3. NDA: NDA(Alph;St)
4. Fin(St)
5. 
x,y:St, a:Alph. Dec(
NDA(x,a,y))
6. y:St. Dec(I(NDA) = y)
7. g: St
8. t:St. I(NDA) = t 
g(t)
9. f: St
10. t: St
Dec(f(t) & F(NDA)(t))
By: ProveDecidable
Generated subgoals:None
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