| author | paulson |
| Wed, 21 Aug 1996 13:22:23 +0200 | |
| changeset 1933 | 8b24773de6db |
| parent 1824 | 44254696843a |
| child 2740 | 2c549ae2563b |
| permissions | -rw-r--r-- |
| 1496 | 1 |
(* Title: HOL/RelPow.thy |
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ID: $Id$ |
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Author: Tobias Nipkow |
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Copyright 1996 TU Muenchen |
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R^n = R O ... O R, the n-fold composition of R |
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*) |
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RelPow = Nat + |
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consts |
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"^" :: "('a * 'a) set => nat => ('a * 'a) set" (infixr 100)
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defs |
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rel_pow_def "R^n == nat_rec id (%m S. R O S) n" |
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end |