1 | 8. f: n (x,y:Alph*//(x LangOf(Auto)-induced Equiv y)) 9. g:((x,y:Alph*//(x LangOf(Auto)-induced Equiv y))  n).
InvFuns( n; x,y:Alph*//(x LangOf(Auto)-induced Equiv y); f; g) 10. EquivRel x,y:Alph*. x LangOf(Auto)-induced Equiv y Dec(x = y x,y:Alph*//(x LangOf(Auto)-induced Equiv y)) |