At: lang sing prod 1 2 1 2 1 1 1
1. Alph: Type
2. L: Alph*
Prop
3. l: Alph*
4. L(l)
||l[0..0
]|| = 0
By:
RWH
(LemmaC
Thm* 
as:T*, i:{0...||as||}, j:{i...||as||}. ||as[i..j]|| = j-i)
0
THEN
Inst
Thm* l:A*. ||l||
0
[Alph;l]
Generated subgoals:None
About:
