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.
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geometricgrouptheory× 211
Large scale properties of groups; growth functions; Dehn functions; small cancellation properties; hyperbolicity and CAT(0); actions and representations; combinatorial group theory; presentations

schemes× 206
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× 204  3manifolds× 204 
mathematicseducation× 203
For questions in Mathematics Education as a scientific discipline. For more handson questions on teaching Mathematics, please use the tag teaching.

largecardinals× 198  singularitytheory× 198 
quantumgroups× 198
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…

quadraticforms× 197  abstractalgebra× 197  asymptotics× 197 
cstaralgebras× 196
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…

ordertheory× 196  topostheory× 196 
intuition× 195
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…

noncommutativealgebra× 193 
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…

finitefields× 192  topologicalgroups× 189  vonneumannalgebras× 189 
combinatorialgeometry× 183 
noncommutativegeometry× 183
Noncommutative geometry in the sense of Connes and beyond: noncommutative algebras viewed as functions on a noncommutative space.

modules× 180 
randommatrices× 180
Statistics of spectral properties of matrixvalued random variables.

derivedcategory× 180  characteristicp× 177  algebraicktheory× 174 
additivecombinatorics× 173
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× 167 
teaching× 167
For questions related to teaching mathematics. For questions in Mathematics Education as a scientific discipline there is also the tag mathematicseducation.

descriptivesettheory× 164 
commutativerings× 161  sobolevspaces× 161  motives× 160  projectivegeometry× 159 