# 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:
 linear-groups× 71 a group $G$ whose elements are invertible $n \times n$ matrices over a field $F$. random-functions× 71 multivalued-functions× 71 In Mathematics, set theory, a Multivalued function is defined as a left-total relation (that is, every input is associated with at least one output) in which at least one input is associated with mult… product-space× 70 For questions about the structure of product space, in the context of topology or measure theory for example. Use other tags to indicate the context. metric-geometry× 70 The study of geometry of manifolds without appealing to differential calculus. It includes studies of length spaces, Alexandrov spaces, and CAT(k) spaces. The techniques are often applicable to Rieman… deformation-theory× 70 The study of how mathematical objects (complex manifolds, associative algebras, Lie algebras) can be deformed into similar mathematical objects, at least infinitesimally. galois-representations× 69 Questions relating to the representations of the absolute Galois group $\mathrm{Gal}(\overline K/K)$ of a number field or of a local field. goldbachs-conjecture× 69 For questions about Goldbach's conjecture: every even integer greater than two is the sum of two primes. blowup× 69 A technique in geometry (especially algebraic and differential, and by extension to study of pseudo-differential operators) for resolution of singularities. Not to be confused with the formation of si… groupoids× 68 A groupoid (in the sense of category theory) is a small category in which every morphism is an isomorphism. Groupoids arise throughout mathematics, e.g. in guise of fundamental groupoids in the theory… profinite-groups× 68 For questions regarding profinite groups and their properties. quadratic-variation× 67 Questions on quadratic variations of stochastic processes. (Not to be confused with functions of bounded variation.) power-towers× 67 For questions pertaining to power towers: expressions like a^(b^(c^d))), which result from iterated exponentiation. The "hyperoperation" tag may be appropriate, too. monomial-ideals× 67 mobius-function× 67 Questions on the Möbius function μ(n), an arithmetic function used in number theory. lagrange-interpolation× 67 A method of generating a polynomial that crosses through a set of data. The degree of this polynomial is equal to the size of the data. flatness× 67 flat when the right-exact "tensor by $M$" functor becomes left exact (and therefore exact). This applies to $A$-algebras as the latter are $A$-module, saying that $B$ flat over $A… chemistry× 67 Questions related to mathematical chemistry which include application of mathematics to problems in chemistry and the development of mathematical methods suitable for such applications and for the for… cauchy-principal-value× 67 Computation of Cauchy principal values of integrals. May be tied in with contour integration, but should be separate from definite-integrals. convex-geometry× 66 when posting questions related to the concept of convexity and geometry. For example, for convex polygons. calendar-computations× 66 for questions about combinatorial and computational issues with regards to calendar systems. A typical, well-known mathematical result in this direction is John Conway's Doomsday Algorithm… function-fields× 66 quantum-computation× 66 Quantum Computation deals with considering computation as fundamentally physical, as well as replacing the classical binary digit (bit) with the quantum binary digit (qubit). While the classical bit i… integration-by-parts× 65 To be used when the technique of Integration By Parts is the dominant topic of the question. mathematicians× 65 Questions about mathematicians and their lives. lie-derivative× 65 The Lie derivative gives a way to define the derivative of a tensor field in the direction of a vector field. linear-regression× 64 .................................................... faq× 64 meant for questions which are generalized forms of questions which get asked frequently. See tag details for more information. automorphic-forms× 64 a generalization of the idea of periodic functions in Euclidean space to general topological groups. centroid× 64 "The centroid or geometric center of a plane figure is the arithmetic mean ("average") position of all the points in the shape. " This tag is for questions about the centroid of a geometrical shape… coalgebras× 64 For questions about coalgebras, comultiplication, counity, comodules, coactions, corepresentations, subcoalgebras, coideals, cosemisimplicity, ... stokes-theorem× 64 a result about integration of differential forms. singular-integrals× 63 integral operators with kernel$K:\mathbb{R}^n\times\mathbb{R}^n\to\mathbb{R}$that is not defined on the diagonal$x=y.\$ This tag is for questions related to singular integrals… birational-geometry× 63 extrapolation× 63 For question on extrapolation, the process of estimating, beyond the original observation interval. eulerian-path× 63 a trail in a graph which visits every edge exactly once.