# Tags

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:
 riemannian-geometry× 799 a subfield of Differential Geometry, which specifically studies "Riemannian Manifolds", manifolds with "Riemannian Metrics", which means that they are equipped with continuous i… st.statistics× 796 Applied, computational and theoretical statistics: e.g. statistical inference, regression, time series, multivariate analysis, data analysis, Markov chain Monte Carlo, design of experiments, case stud… algebraic-groups× 780 oa.operator-algebras× 778 Algebras of operators on Hilbert space, $C^*-$algebras, von Neumann algebras, non-commutative geometry ho.history-overview× 726 History and philosophy of mathematics, biographies of mathematicians, mathematics education, recreational mathematics, communication of mathematics. algorithms× 717 stochastic-processes× 695 a collection of random variables usually indexed by a totally ordered set. prime-numbers× 685 Questions where prime numbers play a key-role, such as: questions on the distribution of prime numbers (twin primes, gaps between primes, Hardy–Littlewood conjectures, etc); questions on prime numbers… arithmetic-geometry× 668 na.numerical-analysis× 639 Numerical algorithms for problems in analysis and algebra, scientific computation computational-complexity× 634 computational complexity theory; complexity classes, such as P, NP, PSPACE, and so on; resource-limited computation; NP-completeness and other completeness concepts; oracle analogues of complexity cla… sg.symplectic-geometry× 622 Hamiltonian systems, symplectic flows, classical integrable systems elliptic-curves× 612 an algebraic curve of genus one with some additional properties. Questions with this tag will often have the top-level tags nt.number-theory or ag.algebraic-geometry in addition; … differential-equations× 607 Ordinary or partial differential equations. Delay differential equations, neutral equations, integro-differential equations. Well-posedness, asymptotic behavior, and related questions. algebraic-number-theory× 576 differential-topology× 574 The study of differentiable manifolds and differentiable maps. One fundamental problem is that of classifying manifolds up to diffeomorphism. Differential topology is what Poincaré understood as topol… fourier-analysis× 572 analytic-number-theory× 557 A beautiful blending of real/complex analysis with number theory. The study involves distribution of prime numbers and other problems and helps giving asymptotic estimates to these. geometry× 553 Deprecated; please use a more specific tag. modular-forms× 542 Questions about modular forms and related areas cohomology× 540 big-list× 515 Questions designed to generate a "big list" of certain results, examples, conjectures, etc. via many individual answers, each contributing one or a few instances. Such a question should typically be i… banach-spaces× 489 a complete normed vector space: A vector space equipped with a norm such that every Cauchy sequence converges. oc.optimization-control× 461 Operations research, linear programming, control theory, systems theory, optimal control, game theory model-theory× 456 the branch of mathematical logic which deals with the connection between a formal language and its interpretations, or models. probability-distributions× 451 algebraic-curves× 442 discrete-geometry× 430 Finite or discrete collections of geometric objects. Packings, tilings, polyhedra, polytopes, intersection, arrangements, rigidity. knot-theory× 428 dealing with embedding of curves in manifolds of dimension 3. A knot is a single circle embedded in the affine space of dimension 3 as a smooth curve not crossing itself. Many knot inva… qa.quantum-algebra× 427 Quantum groups, skein theories, operadic and diagrammatic algebra, quantum field theory harmonic-analysis× 414 a generalisation of Fourier analysis that studies the properties of functions. Check out this tag for abstract harmonic analysis (on abelian locally compact groups), or Euclidean … tag-removed× 414 to be used only when re-tagging highly(!) off-topic questions where none of the actual tags would make sense; all actual tags the questioner has used are removed and something is needed to… smooth-manifolds× 403 Smooth manifolds and smooth functions between them. For manifolds with additional structure, see more specific tags, such as [riemannian-geometry]. For more topological aspects, see [differential-topo… moduli-spaces× 397 Given a concrete category C, with objects denoted Obj(C), and an equivalence relation ~ on Obj(C) given by morphisms in C. The moduli set for Obj(C) is the set of equivalence classes with respect to … higher-category-theory× 393 kt.k-theory-homology× 383 Algebraic and topological K-theory, relations with topology, commutative algebra, and operator algebras