15 Answers votes newest views recent 10introductory book on spectral sequences 5What are some examples of colorful language in serious mathematics papers? 5What are the reasons for considering rings without identity? 5Why don’t ideals and quotients work well for categories? 5Tensor product of simple modules 5Moduli space of modules over non-commutative rings 4Reconstruction from category of D-modules on variety 3Ring with three binary operations 2Deformations and Dimensions: $q$-Deform Finite to Infinite? 2Why do we care about the Hilbert scheme of points? 2Twisting an L-infinity-morphism with “non-associated” Maurer-Cartan elements 1Does $SL_3(R)$ embed in $SL_2(R)$? 1functions satisfying “one-one iff onto” 1Identity on topological space but not on scheme 0Question about hereditary $C^*$-algebra.