Hello all, As some of the new Category code was introduced to Sage, the convention was preserved from MuPAD of referring to a 'monomial' as a 'coefficient' times a 'term'. Unfortunately, this conflicted with the existing Sage convention of referring to a 'term' as a 'coefficient' times a 'monomial'. As the Category code is fairly new, the decision was made to switch notations to be consistent with the rest of Sage. (See the recent 'Category Questions' thread in this group and sage-devel thread http://groups.google.com/group/sage-devel/browse_thread/thread/5bea6f58e29e75f6/66f809ee62453885 for details).
How will this affect you? It could affect your private code, or code you have on the sage-combinat server. The goal is for this change to be in Sage 4.3.2, so any private code you have that uses constructions like 'f.term(i)' or 'f.monomial(key, coeff)' will have to be changed with that release. Basically, all you will need to do is swap the names 'term' and 'monomial' everywhere you see them, with two exceptions that I can think of: the names 'repr_term' and 'monomial_coefficients' have not been changed. You can test your code by using the sage-combinat code, and making sure the patch 'swap_term_and_monomial-jb.patch' is applied. As for code on the server, those patches that are below the swap_term_and_monomial patch (ie, applied earlier) do not need to be touched--any instances are fixed by my patch. For later patches, I *think* I've found all patches that will now have problems. Here is the list of them by owner, along with what has been done: Brant: affinization-bj.patch: I didn't touch this patch because it was guarded, but it looks like there is one instance of '.term' in the patch. It should be changed to '.monomial'. crystals_alcove_path_model_bj.patch: A patch called 'crystals_alcove_path_model_fix_jb.patch' has been placed just after this. Brant, the next time you work with this patch, you should fold my patch in with it. Or just ask me, and I'll do it. Valentin: group_algebras_feature_central_6654_vf.patch: As this was guarded against 4.2.1, I didn't touch it. If this patch is still being worked on, let me know and I will provide a fix patch. Nicolas: categories-ncsf-nt.patch: Fixed in place j-trivial-nt.patch: Fix patch added to queue semigroups_and_algebras-nt.patch: Fix patch added to queue If you have questions about any of this, here is a good place to ask. Otherwise, I apologize for the disruption, but I hope that consistency with Sage will save us from a lot frustration in the future. Cheers, Jason
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