Nuprl - Pf nd_ext_valcom 1 1 2 2 1 1 2

PrintForm Definitions nfa 1 Sections AutomataTheory Doc

1. Alph: Type
2. St: Type
3. NDA: NDA(Alph;St)
4. C: (StAlph*)*
5. ||C|| > 0
6. i:(||C||-1). ||2of(C[i])|| > 0
7. q: St
8. a: Alph
9. p: St
10. NDA(C) q
11. NDA(q,a,p)

1of(hd((rev([ < p,nil > ]) @ rev(map(c. < 1of(c),a.2of(c) > ;C))))) = p

By: RWH (LemmaC Thm* l,m:T*. ||l|| > 0 hd((l @ m)) = hd(l)) 0

Generated subgoals:

1 ||rev([ < p,nil > ])|| > 0

2 1of(hd(rev([ < p,nil > ]))) = p

About:

1	`\|\|rev([ < p,nil > ])\|\| > 0`
2	`1of(hd(rev([ < p,nil > ]))) = p`