On Sat, 2 Nov 2019, 18:06 Keren Shao, <k5s...@ucsd.edu> wrote: > > Could you please explain both (just high level steps, assuming my module are > standalone python scripts that imports nothing other than sage/standard > library)?
Stand-alone Python scripts doing a particular maths computation don't really belong to Sagemath library. A natural addition to Sage would be a method to compute the value of an irred. character on a group element (or just the corr. partition). Characters of the symmetric group come in different ways into Sage, from the symmetric group (a), from the symmetric functions (b), and directly from partitions (c) (a) Have you seen https://ask.sagemath.org/question/33776/evaluation-of-character-of-symmetric-group/ ? (which points at https://doc.sagemath.org/html/en/reference/combinat/sage/combinat/symmetric_group_representations.html#sage.combinat.symmetric_group_representations.SymmetricGroupRepresentation which documents code in sage/combinat/symmetric_group_representations.py) (b) http://doc.sagemath.org/html/en/reference/combinat/sage/combinat/sf/character.html (c) http://doc.sagemath.org/html/en/reference/combinat/sage/combinat/partition.html?highlight=partition#sage.combinat.partition.Partition For (a), computing the character values (that's what Murnaghan-Nakayama formula does) is available, although I don't know how efficient it is. For (b), I don't even know how to get character values (would be good to find out and document...) For (c), one can think of adding Murnaghan-Nakayama as a method for a partition (which would take another partition and compute the corr. character value) After all, there is already character_polynomial() there, so this does not look unnatural place to add things related to characters. Probably (c) looks like the easiest place to add Murnaghan-Nakayama. So this addresses "how to modify/improve Sage code". Once you modified python/cython sage code, you need to update/rebuild, by running ./sage -b (this suffices for Python code in 100% cases, for Cython sometimes more is needed...) ------------------ Once you have such a modifiction ready, you need to create a git branch on Sage's git repo, and put it up for review on trac.sagemath.org (this is documented already quite well, I think). HTH Dima > > On Saturday, November 2, 2019 at 6:04:16 AM UTC-7, Dima Pasechnik wrote: >> >> there are two mostly independent tasks - how to modify/improve Sage code, >> and how to contribute these changes to Sage. >> >> which of the two would you like to be explained? >> >> On Sat, 2 Nov 2019, 14:56 Keren Shao, <k5s...@ucsd.edu> wrote: >>> >>> It looks like #15555 is still open (and I cannot find any implementation >>> from the documentation.) Can anyone confirm its status with me? >>> >>> Also, I am trying understand how to contribute, say a script for >>> Murnaghan-Nakayama formula without dependencies, to SageMath but this link >>> http://doc.sagemath.org/html/en/developer/#section-writing-code-for-sage >>> looks like a textbook. Can anyone summarize the high-level process in an >>> algorithmic way? >>> >>> Thank you. >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "sage-devel" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to sage-...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/sage-devel/3067c2fe-1588-40f9-aeba-74e5f9c8dc7e%40googlegroups.com. > > -- > You received this message because you are subscribed to the Google Groups > "sage-devel" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-devel+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sage-devel/ab3c34c5-dc6e-48d9-b8cf-d0abc405c01b%40googlegroups.com. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/CAAWYfq397ibE42%2Bib5quh5NwCX5bNRZ0QxwQU5KAOgHf5hqOug%40mail.gmail.com.
