On Wed, Jun 18, 2008 at 11:03 AM, Pearu Peterson <[EMAIL PROTECTED]> wrote: > > Hi, > > In sympycore we have Verbatim class that holds expressions without > any evaluation. E.g. it can hold the expression 'x - y' in both > forms: Add(x, -y) and Sub(x, y). Converting to Verbatim and back > to the default representation is relatively cheap. May sympy should > implement a similar scheme in order to better support the cse > algorithm.
Thanks for the tip. BTW, you don't seem to have a class Sub in sympycore, definitely not exported by default. Ondrej --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sympy@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sympy?hl=en -~----------~----~----~----~------~----~------~--~---
