src/HOL/RelPow.thy
author clasohm
Wed Mar 13 11:55:25 1996 +0100 (1996-03-13 ago)
changeset 1574 5a63ab90ee8a
parent 1496 c443b2adaf52
child 1824 44254696843a
permissions -rw-r--r--
modified primrec so it can be used in MiniML/Type.thy
     1 (*  Title:      HOL/RelPow.thy
     2     ID:         $Id$
     3     Author:     Tobias Nipkow
     4     Copyright   1996  TU Muenchen
     5 
     6 R^n = R O ... O R, the n-fold composition of R
     7 *)
     8 
     9 RelPow = Nat +
    10 
    11 consts
    12   "^" :: "('a * 'a) set => nat => ('a * 'a) set" (infixr 100)
    13 defs
    14   rel_pow_def "R^n == nat_rec n id (%m S. R O S)"
    15 end