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src/HOL/ex/StringEx.ML
author paulson
Sun, 23 Apr 2000 11:34:41 +0200
changeset 8765 1bc30ff5fc54
parent 8035 84c5ce912b43
permissions -rw-r--r--
[Int_CC.sum_conv, Int_CC.rel_conv] no longer exist


Goal "hd(''ABCD'') = CHR ''A''";
by (Simp_tac 1);
qed "";

Goal "hd(''ABCD'') ~= CHR ''B''";
by (Simp_tac 1);
qed "";

Goal "''ABCD'' ~= ''ABCX''";
by (Simp_tac 1);
qed "";

Goal "''ABCD'' = ''ABCD''";
by (Simp_tac 1);
qed "";

Goal "''ABCDEFGHIJKLMNOPQRSTUVWXYZ'' ~= ''ABCDEFGHIJKLMNOPQRSTUVWXY''";
by (Simp_tac 1);
qed "";
isabelle