At: mn 23 lem 1 1 1 1 1
1. Alph: Type
2. R: Alph*
Alph*Prop
3. Fin(Alph)
4. EquivRel x,y:Alph*. x R y
5. Fin(x,y:Alph*//(x R y))
6. 
x,y,z:Alph*. (x R y) 
((z @ x) R (z @ y))
7. g: (x,y:Alph*//(x R y))
8. x: x,y:Alph*//(x R y)
9. y: x,y:Alph*//(x R y)
10. x@0: Alph*
Dec((
z.g(z@
x) = g(z@y))(x@0))
By: Reduce 0
Generated subgoal:| 1 | Dec(g(x@0@x) = g(x@0@y)) |
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