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1 (* Title: HOL/IOA/example/Multiset.thy |
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2 ID: $Id$ |
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3 Author: Tobias Nipkow & Konrad Slind |
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4 Copyright 1994 TU Muenchen |
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5 |
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6 Axiomatic multisets. |
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7 Should be done as a subtype and moved to a global place. |
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8 *) |
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9 |
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1 Multiset = Arith + "Lemmas" + |
10 Multiset = Arith + "Lemmas" + |
2 |
11 |
3 types |
12 types |
4 |
13 |
5 'a multiset |
14 'a multiset |