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doc-src/Tutorial/Misc/NatSum.ML
author
paulson
Wed, 13 Oct 1999 12:04:11 +0200
changeset 7840
e1fd12b864a1
parent 5377
efb799c5ed3c
permissions
-rw-r--r--
projecting/extending version of drop_prog_guarantees
Goal "sum n + sum n = n*(Suc n)";
by(induct_tac "n" 1);
by(Auto_tac);