On Dec 20, 2007 4:21 AM, John Cremona <[EMAIL PROTECTED]> wrote: > Topic 2: package names. > > I am a little embarrassed that there is precisely one package (spkg) > whose name is a person's name (especially when it apparently results > in bug reports of the form "cremona causes fatal crash"). It has > never occurred to me to invent a name for my programs collectively > though.
* How about "eclib", for "elliptic curve library"? Googling for that suggests it would be a good choice of name. * "ecl" is not a good choice, since it is already taken by a programming language and a lisp implementation > > Topic 3: trac #1058: the mwrank interface barfs on bad input > > The issue here is whether to extend mwrank_EllipticCurve to allow > curves with rational (as opposed to integral) coefficients. I have > been thinking about this. I do not want to rewrite my elliptic curve > code from scratch, but some things would be relatively easy: > * allowing the mwrank binary to accept 5-tuples of rationals to define a curve > * allowing the two_descent class (which computes rank and the MW > group) to accept rationals > -- in each case, the generating points returned would be correctly > mapped back to the input not-necessarily-integral model. > > But it would be a lot harder to extend this to all the other > functionality, to the extent that a Sage user could construct an > mwrank_EllipticCurve which was not integral. Since I guess hardly any > Sage users actually construct mwrank_EllipticCurves anyway, would that > be a problem? I think making mwrank_EllipticCurve give an error on non-integral input is fine, since nobody should use mwrank . Transforming a curve to integral form first should be done in Sage. William --~--~---------~--~----~------------~-------~--~----~ 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/ -~----------~----~----~----~------~----~------~--~---
