Dear group theorists and friends of group theorists, we proudly present the new version 2.1 of the modular group cohomology spkg.
Now, all classes, methods and functions in the Cython and Python code are covered by tests. Moreover, it builds and tests not only on sage.math and bsd.math (64 and 32 bit mode), but also on t2. It is able to take advantage of new features and bugfixes of Singular 3-1-1, but also works with Singular 3-1-0. Documentation is at http://sage.math.washington.edu/home/SimonKing/Cohomology/ New features include the computation of essential and depth essential ideals. We found a new (in fact: only the second known) example of a group whose modular cohomology ring has an essential ideal whose square does not vanish. In order to make it work on t2, it was needed to change several function names in the underlying C-code, since apparently the Sun linker was confusing them with names from pari. Actually the same happened before, when a name from Singular was mistaken for a name of pari (ticket #1396). So, I think the problem of pari infiltrating other packages' name spaces should be studied in more detail. The ticket for the new package version is #9894 -- and of course I'd appreciate if you could review it. I think it would be a good idea to test on some more platforms, such as PPC (but I have no access to one). Best regards, Simon -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
