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× 219 
schemes× 216
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…

singularitytheory× 210  topologicalgroups× 210 
asymptotics× 209  3manifolds× 208 
cstaralgebras× 208
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…

fields× 208 
abstractalgebra× 207  largecardinals× 207 
mathematicseducation× 205
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…

quantumgroups× 203
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…

finitefields× 203  quadraticforms× 202  ordertheory× 200  topostheory× 200 
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…

linearprogramming× 197  noncommutativealgebra× 197 
noncommutativegeometry× 195
Noncommutative geometry in the sense of Connes and beyond: noncommutative algebras viewed as functions on a noncommutative space.

hopfalgebras× 193
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…

randommatrices× 193
Statistics of spectral properties of matrixvalued random variables.

combinatorialgeometry× 193  vonneumannalgebras× 193 
derivedcategory× 188
For questions about the derived categories of various abelian categories and questions regarding the derived category construction itself.

modules× 186  algebraicktheory× 185  characteristicp× 179 
additivecombinatorics× 178
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× 176  hodgetheory× 173  sobolevspaces× 172 
teaching× 172
For questions related to teaching mathematics. For questions in Mathematics Education as a scientific discipline there is also the tag mathematicseducation.

motives× 171  descriptivesettheory× 170  commutativerings× 169 