RE: real variable
- To: mathgroup at smc.vnet.net
- Subject: [mg32267] RE: [mg32227] real variable
- From: "Florian Jaccard" <jaccardf at eicn.ch>
- Date: Wed, 9 Jan 2002 23:37:24 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Hello ! You can for example do this : In[1]:= <<Algebra`ReIm` In[2]:= x/:Im[x]=0; In[3]:= Conjugate[x] Out[3]= x In[4]:= Re[x+I x] Out[4]= x Meilleures salutations Florian Jaccard EICN-HES e-mail : jaccardf at eicn.ch -----Message d'origine----- De : Nikolay Andreev [mailto:andreev at mccme.ru] Envoyé : mer., 9. janvier 2002 09:17 À : mathgroup at smc.vnet.net Objet : [mg32227] real variable Dear Mathgroup! How could one explain to Mathematica that variable x will be real during all the session, so if somewhere appear Conjugate[x] then this must be x, and Re[x+I*x] is x? Thank you, Nikolay ------------------------------------------------ Nikolay N. Andreev Russia, 117966, GSP-1, Moscow, Gubkina 8. Steklov Institute of Mathematics Dep. of Function Theory E-mail: andreev at mccme.ru Home page: http://www.mi.ras.ru/~andreev ------------------------------------------------