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1 (* Title: HOL/UNITY/SubstAx |
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2 ID: $Id$ |
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3 Author: Lawrence C Paulson, Cambridge University Computer Laboratory |
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4 Copyright 1998 University of Cambridge |
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5 |
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6 My treatment of the Substitution Axiom -- not as an axiom! |
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7 *) |
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8 |
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9 SubstAx = WFair + |
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10 |
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11 constdefs |
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12 |
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13 LeadsTo :: "['a set, ('a * 'a)set set, 'a set, 'a set] => bool" |
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14 "LeadsTo Init Acts A B == |
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15 leadsTo Acts (reachable Init Acts Int A) |
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16 (reachable Init Acts Int B)" |
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17 |
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18 |
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19 end |