This commit is contained in:
Adrien Vannson
2022-05-10 14:02:36 +02:00
parent 7eb605eb83
commit f6be1ad6da
+6
View File
@@ -1 +1,7 @@
(A -> B) -> ~B -> ~A (A -> B) -> ~B -> ~A
intro f.
intro b.
intro a.
apply b.
apply f.
assumption.