Dear sage community, I am new to sage, so please forgive me if I am reporting well-known behaviour here. When generating multivariate polynomial rings, some (seemingly) odd things can happen:
1. Sage seems to guess the meaning of 'x' in some cases: sage: QX=MPolynomialRing(QQ,2,'xy'); QX Multivariate Polynomial Ring in x, y over Rational Field sage: x in QX # no variables assinged to indeterminates yet... False sage: indets=QX.objgens()[1];indets (x, y) sage: x in indets True But x and indets[0] have different types. 2. indeterminates are sometimes shared between rings: sage: R.<x,y>=QQ[];R Multivariate Polynomial Ring in x, y over Rational Field sage: R2=MPolynomialRing(QQ,2,'xy') sage: R==R2 True sage: R2=MPolynomialRing(QQ,1,'x') sage: x in R2 False This looks inconsistent. Shouldn't R2 have it's own set of indeterminates? If the user wants to have the same display names for indeterminates of different rings that shouldn't be sage's problem. Thanks very much, marc --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
