It looks like your problem is with the cup_product method for cochains in sage/homology/chains.py. Is that right? As far as I can tell, that method is not used anywhere else in the Sage library. In any case, feel free to create a pull request to fix and improve it.
On Saturday, June 17, 2023 at 9:28:05 PM UTC-7 Ezra Akresh wrote: > We have provided an example inside this Cocalc notebook: > https://cocalc.com/share/public_paths/9a10e579b445d6b489fe88dd6ad4e4375d4f5fba > > On Friday, June 16, 2023 at 5:50:24 PM UTC-5 John H Palmieri wrote: > >> Can you please provide an example where things do not work? Are you >> talking about manifolds or cell complexes or some other classes? >> >> On Friday, June 16, 2023 at 1:14:32 PM UTC-7 Ezra Akresh wrote: >> >>> In a recent project, my team and I developed functions for the cup >>> product and wedge product of cochains utilizing the functionality of >>> various Sage classes. We noticed that the current cup product function only >>> works for 0-simplices because the orientations do not match. We were >>> wondering if it would be helpful if we submitted our code to be added to >>> the library. >>> >> -- 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/55ed29cc-79fc-4274-b4b6-ac5b4c802d9dn%40googlegroups.com.
