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: 
highercategorytheory× 292  smoothmanifolds× 292  sequencesandseries× 291 
openproblem× 288
equivalent to a known open problem, then the openproblem tag is added. After that, the question essentially becomes, "What is known about this problem? What are some…

abelianvarieties× 286
projective algebraic varieties endowed with an Abelian group structure. Over the complex numbers, they can be described as quotients of a vector space by a lattice of full rank. …

examples× 281  harmonicanalysis× 280  vectorbundles× 279 
discretegeometry× 274
Finite or discrete collections of geometric objects. Packings, tilings, polyhedra, polytopes, intersection, arrangements, rigidity.

simplicialstuff× 269  lattices× 265 
convexpolytopes× 261
the convex hulls of a finite set of points in Euclidean spaces. They have rich combinatorial, arithmetic, and metrical theory, and are related to toric varieties and to linear pr…

hyperbolicgeometry× 260  inequalities× 259 
forcing× 257
a method first used to prove the continuum hypothesis is independent of the classical axioms of set theory

ergodictheory× 253
Dynamical systems on measure spaces, invariant measures, ergodic averages, mixing properties.

galoistheory× 248 
sp.spectraltheory× 243
Schrodinger operators, operators on manifolds, general differential operators, numerical studies, integral operators, discrete models, resonances, nonselfadjoint operators, random operators/matrices…

terminology× 239 
specialfunctions× 237
Many special functions appear as solutions of differential equations or integrals of elementary functions. Most special functions have relationships with representation theory of Lie groups.

riemannsurfaces× 229  groupcohomology× 227  convexity× 226  deformationtheory× 218 
integration× 218 
it.informationtheory× 218
Covers theoretical and experimental aspects of information theory and coding.

convexgeometry× 211 
bigpicture× 211
Questions designed to get an overview of a specific subject or body of results or to understand the relations among similar definitions, techniques or concepts appearing in different subfields of mat…

etalecohomology× 210  modelcategories× 208  diophantineequations× 206  stacks× 203 
axiomofchoice× 202 
mathematicseducation× 200
For questions in Mathematics Education as a scientific discipline. For more handson questions on teaching Mathematics, please use the tag teaching.

stochasticcalculus× 199  fields× 198 