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Forum URL: http://www.cut-the-knot.org/cgi-bin/dcforum/forumctk.cgi
Forum Name: College math
Topic ID: 156
Message ID: 1
#1, RE: Re: Permutation Question
Posted by alexb on Nov-18-01 at 03:23 PM
In response to message #0
OK. A step at a time.

>The operation * is defined for any two numbers m and n from
>Z.

Is this true? Is the operation * defined for all m and n?