More "Logical" functions?
- To: mathgroup at smc.vnet.net
- Subject: [mg4144] More "Logical" functions?
- From: sherod at boussinesq.Colorado.EDU (Scott Herod)
- Date: Fri, 7 Jun 1996 02:08:11 -0400
- Organization: University of Colorado at Boulder
- Sender: owner-wri-mathgroup at wolfram.com
I often find myself trying to solve big sets of polynomial equations.
I realize that there are Groebner basis packages for use in this but
many times I can get by with Reduce and Solve. My problem is this:
Often I get results like
{{ x -> 0 }, {x -> 0, y -> 5 }, {x -> 0, z -> -2}, ... }
where {x -> 0} is common to all of the terms. I would like to be able
to factor out the x=0 from each equation. I don't need to see everything
else if x has to be zero anyway.
Currently I'm doing a LogicalExpand[results && x != 0] to see the cases
where x does not have to be zero, but something to factor the x -> 0
would be nicer.
Does anyone know of an existing package do Logical expression operations?
Scott Herod
(sherod at newton.colorado.edu)
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