Convention of D_n

Open kcrisman opened this issue 3 years ago • 2 comments

This is pretty minor, but worth mentioning if it hadn't been before. At https://github.com/twjudson/aata/blob/3f8983e52b996228a67dc3f6d624d3baaff61cdc/src/permute.xml#L1586 it looks like in context (such as the hint) like $D_{2n}$ is defined as the dihedral group of the $n$-gon, but earlier it looks like the notation is clearly $D_n$. Anyway, it's confusing to ask for the center of $D_n$ when all the numbers given are evens.

Oct 07 '22 18:10 kcrisman

Sorry, this was already referenced in https://github.com/twjudson/aata/issues/48 nonetheless I think that it's still a bit unclear, since it confused my students today ...

Oct 07 '22 18:10 kcrisman

Maybe one could just add for them to also ask students to consider $D_5$ as an example?

Oct 07 '22 18:10 kcrisman