extended a_n quiver rep... ??sa eigenvalue around the loop, os??


simon... ??sa... verdier duality in "singular" case???? ??as requiring derived cat rather than original cat?? os... .... os.... ???hmmm... sa... "singular" stuff and perverse sheaf ... ??sa singularity of alg variety (os...) ct of coherent sheaf over it ... ???os??? hmmm... sa skyscraper sheaf at non-singular point ... ??? ???ct skyscraper sheaf at singular point... os... asf os... sa schubert-bruhat stratification... ??os... asf os... ???... ...sa perverse sheaf and quiver rep...

simon... ????..... not sure now... ???... ??perhaps i was thinking about "quiver varieties" and supposed "tame" case of extended a_n ... ??or something... mixing together "verdier duality" stuff with quiver rep stuff in certain ways... ??or something...

baez... fan... kaleidoscope... stack... ???..... toric geometry...