1 | 7. h: Alph* Alph* 8. ( x,y:Alph*. (x ( x,y. x = y x,y:Alph*//(x LangOf(Auto)-induced Equiv y)) y)  h(x) = h(y))
& ( x:Alph*. x ( x,y. x = y x,y:Alph*//(x LangOf(Auto)-induced Equiv y)) (h(x))) Surj(St; x,y:Alph*//(x LangOf(Auto)-induced Equiv y); c) |