Aaron S. Meurer wrote: > > On Jul 7, 2009, at 12:29 PM, Christophe wrote: > >> Aaron S. Meurer a écrit : >>> You're probably right. According to >>> http://en.wikipedia.org/wiki/Interval_(mathematics)#Notations_for_intervals >>> , there is a different notation based on whether you are in America >>> or >>> in Europe. I think we can allow multiple different notations for the >>> arguments of the function. For example, also allow the use of a >>> bracket to denote open and a parenthesis to denote closed as is the >>> standard notation, so open-closed would be '(]', and so on. >>> >>> As to printing, I think we need to decide. I have never seen >>> the ]3,4] notation, but I guess that is used. What do you think? I >>> guess we can include to option to have both, but we still need a >>> default option. >>> >> ]3;4] is the french standard notation of (3,4]. I could add an >> optional >> argument lang. The choice lang='fr' will write ]3;4] and other value >> of >> lang will write (3,4]. > According to the Wikipedia article, that notation is based on ISO > 31-11 and is used in Europe and South America. I think maybe the > argument should be notation="American" for (3,4], and > notation="European" for ]3, 4], with "American" as the default.
To confuse the matter further: there is also Czech notation: (3,4> :) r. --~--~---------~--~----~------------~-------~--~----~ 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 sympy+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sympy?hl=en -~----------~----~----~----~------~----~------~--~---
