author | wenzelm |
Thu, 06 Dec 2001 00:39:40 +0100 | |
changeset 12397 | 6766aa05e4eb |
parent 11394 | e88c2c89f98e |
child 13583 | 5fcc8bf538ee |
permissions | -rw-r--r-- |
(* Title: HOL/GroupTheory/Exponent ID: $Id$ Author: Florian Kammueller, with new proofs by L C Paulson Copyright 1998-2001 University of Cambridge The combinatorial argument underlying the first Sylow theorem exponent p s yields the greatest power of p that divides s. *) Exponent = Main + Primes + constdefs exponent :: "[nat, nat] => nat" "exponent p s == if p \\<in> prime then (GREATEST r. p^r dvd s) else 0" end