1.1 --- a/src/HOL/Induct/Mutil.ML Wed Mar 22 13:01:18 2000 +0100
1.2 +++ b/src/HOL/Induct/Mutil.ML Wed Mar 22 13:01:57 2000 +0100
1.3 @@ -104,9 +104,9 @@
1.4 by (auto_tac (claset(), simpset() addsimps [mod_Suc]));
1.5 qed "domino_singleton";
1.6
1.7 -Goal "d:domino \
1.8 -\ ==> EX i j i' j'. colored 0 d = {(i,j)} & colored 1 d = {(i',j')}";
1.9 -by (blast_tac (claset() addDs [domino_singleton]) 1);
1.10 +Goal "d:domino ==> (EX i j. colored 0 d = {(i,j)}) & \
1.11 +\ (EX i' j'. colored 1 d = {(i',j')})";
1.12 +by (blast_tac (claset() addSIs [domino_singleton]) 1);
1.13 qed "domino_singleton_01";
1.14
1.15 (*** Tilings of dominoes ***)