A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
Type to find tags: 
axiomofchoice× 218 
schemes× 213
the geometrical study of solutions of algebraic systems of equations, not only over the real/complex numbers, but also over integer numbers (and more generally o…

fields× 209 
mathematicseducation× 207
For questions in Mathematics Education as a scientific discipline. For more handson questions on teaching Mathematics, please use the tag teaching. There is also a Stack Exchange community http://mat…

largecardinals× 206  3manifolds× 206 
cstaralgebras× 205
a complex Banach algebra together with an isometric antilinear involution satisfying (a b)* = b* a* and the C*identity ‖a* a‖ = ‖a‖². Related tags: [tag:banachalgebras], [tag:vonne…

singularitytheory× 204 
quadraticforms× 203 
quantumgroups× 201
Questions about algebraic structures known as quantum groups, and their categories of representations. Quasitriangular Hopf algebras and their Drinfel'd twists, triangular Hopf algebras, $C^\star$ qua…

linearprogramming× 201  asymptotics× 200 
abstractalgebra× 199  topologicalgroups× 199 
intuition× 198
Questions asking for the intuition behind some definition, conjecture, proof etc. In other words, questions designed to improve or to acquire understanding on a conceptual or intuitive level, as oppos…

ordertheory× 198 
topostheory× 196  noncommutativealgebra× 194  finitefields× 194 
hopfalgebras× 192
a vector space $H$ over a field $k$ endowed with an associative product $\times:H\otimes_k H\to H$ and a coassociative coproduct $\Delta:H\to H\otimes_k H$ which is a morphism of alg…

combinatorialgeometry× 190  vonneumannalgebras× 190 
noncommutativegeometry× 188
Noncommutative geometry in the sense of Connes and beyond: noncommutative algebras viewed as functions on a noncommutative space.

modules× 186 
derivedcategory× 185
For questions about the derived categories of various abelian categories and questions regarding the derived category construction itself.

randommatrices× 184
Statistics of spectral properties of matrixvalued random variables.

algebraicktheory× 179  characteristicp× 178 
additivecombinatorics× 175
Questions on the subject additive combinatorics, also known as arithmetic combinatorics, such as questions on: additive bases, sum sets, inverse sum set theorems, sets with small doubling, Sidon sets,…

markovchains× 171  hodgetheory× 169 
teaching× 169
For questions related to teaching mathematics. For questions in Mathematics Education as a scientific discipline there is also the tag mathematicseducation.

descriptivesettheory× 168  motives× 166  sobolevspaces× 166  commutativerings× 165 