DEFINITION ty3_gen_cvoid()
TYPE =
∀g:G
.∀c:C
.∀t1:T
.∀t2:T
.ty3 g c t1 t2
→∀e:C
.∀u:T
.∀d:nat
.getl d c (CHead e (Bind Void) u)
→∀a:C
.drop (S O) d c a
→ex3_2 T T λy1:T.λ:T.eq T t1 (lift (S O) d y1) λ:T.λy2:T.eq T t2 (lift (S O) d y2) λy1:T.λy2:T.ty3 g a y1 y2
BODY =
Show proof