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doc-src/Tutorial/Misc/NatSum.ML
author
wenzelm
Thu, 24 Jan 2002 22:42:14 +0100
changeset 12847
afa356dbcb15
parent 5377
efb799c5ed3c
permissions
-rw-r--r--
fixed subgoal_tac; fails on non-existent subgoal;
Goal "sum n + sum n = n*(Suc n)";
by(induct_tac "n" 1);
by(Auto_tac);