At: lang prod functionality 1
1. Alph: Type
2. L: Alph*
Prop
3. L': Alph*
Prop
4. M: Alph*
Prop
5. M': Alph*
Prop
6.
l:Alph*. L(l) 
L'(l)
7.
l:Alph*. M(l) 
M'(l)
8. l: Alph*
(
i:{0...||l||}. L(l[0..i
]) & M(l[i..||l||
])) 
(
i:{0...||l||}. L'(l[0..i
]) & M'(l[i..||l||
]))
By:
RWH (HypC 6) 0
THEN
RWH (HypC 7) 0
Generated subgoals:None
About: