Re: assume an integer
- To: mathgroup at smc.vnet.net
- Subject: [mg22449] Re: assume an integer
- From: "Allan Hayes" <hay at haystack.demon.co.uk>
- Date: Wed, 8 Mar 2000 02:21:49 -0500 (EST)
- References: <89qgh4$ah5@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Peter, We can't do this globally, but we do have Simplify[{Cos[m Pi], Sin[m Pi] }, {m \[Element] Integers}] // InputForm {(-1)^m, 0} Allan --------------------- Allan Hayes Mathematica Training and Consulting Leicester UK www.haystack.demon.co.uk hay at haystack.demon.co.uk Voice: +44 (0)116 271 4198 Fax: +44 (0)870 164 0565 "Peter Jay Salzman" <covenant at dirac.org> wrote in message news:89qgh4$ah5 at smc.vnet.net... > hi all > > is it possible to have Mathematica assume a variable is an integer? i can't find an > example in the Mathematica book (book is for 3.0, but i'm using 4.0). > > what i'm getting at is: > Cos[m Pi] = (-1)^m > Sin[n Pi] = 0 > > etc. thanks! > pete > >