equal
deleted
inserted
replaced
3 Author: Cornelia Pusch |
3 Author: Cornelia Pusch |
4 Copyright 1999 Technische Universitaet Muenchen |
4 Copyright 1999 Technische Universitaet Muenchen |
5 *) |
5 *) |
6 |
6 |
7 Goalw [newref_def] |
7 Goalw [newref_def] |
8 "hp x = None \\<longrightarrow> hp (newref hp) = None"; |
8 "hp x = None --> hp (newref hp) = None"; |
9 by (fast_tac (claset() addIs [someI2_ex] addss (simpset())) 1); |
9 by (fast_tac (claset() addIs [someI2_ex] addss (simpset())) 1); |
10 qed_spec_mp "newref_None"; |
10 qed_spec_mp "newref_None"; |