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15 set "baseuri" "cic:/matita/test/tacticals".
17 inductive myand (A, B: Prop) : Prop \def
18 | myconj : ∀a:A.∀b:B. myand A B.
21 ∀A,B,C,D:Prop.∀a:A.∀b:B.∀c:C.∀d:D.myand (myand A B) (myand C D).
22 intros; try (apply myconj); try assumption; try (apply myconj);
27 ∀A,B,C,D:Prop.∀a:A.∀b:B.∀c:C.∀d:D.myand (myand A B) (myand C D).
28 intros; progress (apply myconj; apply myconj);
33 ∀A,B,C,D:Prop.∀a:A.∀b:B.∀c:C.∀d:D.myand (myand A B) (myand C D).
34 intros; repeat first [ assumption | apply myconj].
38 ∀A,B,C,D:Prop.∀a:A.∀b:B.∀c:C.∀d:D.myand (myand A B) (myand C D).
45 ∀A,B,C,D:Prop.∀a:A.∀b:B.∀c:C.∀d:D.myand (myand A B) (myand C D).
47 [1:repeat (constructor 1; try assumption)
48 |2:repeat (constructor 1; try assumption)