Re: Define new constant as Pi is

*To*: mathgroup at smc.vnet.net*Subject*: [mg65851] Re: Define new constant as Pi is*From*: Paul Abbott <paul at physics.uwa.edu.au>*Date*: Tue, 18 Apr 2006 06:56:47 -0400 (EDT)*Organization*: The University of Western Australia*References*: <e1vf0p$9do$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

In article <e1vf0p$9do$1 at smc.vnet.net>, suchaneck <greenux at gmx.de> wrote: > I'm programming a package for Max-Plus Algebra, where the constant > \[Epsilon} is the same as -\[Infinity]. I want Mathematica to operate with > it, like it does with Pi. While calculating a function it knows that the > Symbol Pi is 3.14..., but within the Output Pi is kept as Symbol. I want > the same for \[Epsilon}. Does anybody knows a solution for that? Thanks. If you define N[\[Epsilon]] := -Infinity then if you enter (\[Epsilon] + 3)^2 - \[Epsilon] the output is not evaluated. Then apply N. N[%] Infinity Cheers, Paul _______________________________________________________________________ Paul Abbott Phone: 61 8 6488 2734 School of Physics, M013 Fax: +61 8 6488 1014 The University of Western Australia (CRICOS Provider No 00126G) AUSTRALIA http://physics.uwa.edu.au/~paul