I sent this a little while ago but it didn't seem to go through... sorry if it appears twice.
What do people think of having a canonical map between multivariate polynomial rings when one's variables are a subset of the other's? What about a subset in the same order? What about an initial subset in the same order? David --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@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-devel URLs: http://sage.scipy.org/sage/ and http://modular.math.washington.edu/sage/ -~----------~----~----~----~------~----~------~--~---