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Mar 28, 2015 at 23:57 comment added YCor These are the intersections of the maximal abelian subalgebras of $M_n(F)$ with $GL_n(F)$. It is probably more natural to begin with the study of the latter question.
Mar 18, 2015 at 13:58 answer added Jim Humphreys timeline score: 3
Mar 18, 2015 at 10:16 comment added Nick Gill This might be helpful: mathnet.ru/php/…
Mar 17, 2015 at 21:41 answer added Geoff Robinson timeline score: 6
Mar 17, 2015 at 20:54 comment added Joonas Ilmavirta What do you mean by recognizing? Do you want a method for checking whether $A$ is maximal abelian, a characterization of maximal abelian subgroups, or something else?
Mar 17, 2015 at 20:40 review First posts
Mar 17, 2015 at 20:54
Mar 17, 2015 at 20:37 history asked maryam CC BY-SA 3.0