# 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:
 provability× 50 greens-theorem× 50 coalgebras× 50 voting-theory× 50 For questions regarding the mathematical analysis of voting systems and behavior. Examples include the median voter theorem or the Condorcet jury theorems. constraint-programming× 49 a particular form of optimization modeling that tends to be well-suited for combinatorial models like scheduling and planning. gamma-distribution× 49 percentile× 49 A value representing the lowest $n$ percent of the values in a data set or of the possible values of a random variable. perfect-numbers× 49 Questions about or involving perfect numbers which are positive integers that are equal to the sum of their proper positive divisors. magic-square× 49 an arrangement of $n^2$ numbers, usually distinct integers, in a square, such that the n numbers in all rows, all columns, and both diagonals sum to the same constant. ht… maxima-software× 48 For questions concerning the open source computational software program Maxima. profinite-groups× 48 For questions regarding profinite groups and their properties. stereographic-projections× 48 For question about stereographic projection, a particular mapping that projects a sphere onto a plane. elliptic-equations× 48 For questions about elliptic partial differential equations. If your question is specific to the Laplace equation, see (harmonic-functions). cauchy-principal-value× 48 Computation of Cauchy principal values of integrals. May be tied in with contour integration, but should be separate from definite-integrals. birational-geometry× 47 positive-characteristic× 47 For questions involving rings of positive characteristic, particularly those questions whose statements and hypotheses heavily rely on positive characteristic. Consider using the ring-theory tag for … orientation× 47 For question regarding the notion of orientation both in topology and in global analysis. manifolds-with-boundary× 46 typically defined to be without boundaries (every point has a neighbourhood homeomorphic to an Euclidean open disc). Use this tag for the manifolds with boundaries, as well as manifolds … kolmogorov-complexity× 46 Kolmogorov complexity concerns the size of the shortest program that generates a given string. inversive-geometry× 46 Questions related to Inversive Geometry and its applications. quasicoherent-sheaves× 46 function-fields× 46 transformational-geometry× 46 In mathematics, transformation geometry (or transformational geometry) is the name of a mathematical and pedagogic approach to the study of geometry by focusing on groups of geometric transformations,… functional-calculus× 45 Functional calculus allows the evaluation of a function applied to a linear operator or a matrix. The function could be a polynomial, a holomorphic function, a continuous function or a measurable func… plane-geometry× 45 a subfield of Euclidean geometry, restricted to the flat two-dimensional space. Plane geometry studies shapes, ratios and relative locations of 2D figures which can be embedded into … klein-bottle× 45 a non-orientable surface. It was first described in 1882 by the German mathematician Felix Klein. multivalued-functions× 45 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… q-series× 44 rngs× 44 an associative ring without necessarily having a multiplicative identity (rng = ring - $i$dentity). centroid× 44 torsion-groups× 44 For questions about torsion groups and their properties. A torsion group is a group in which every element has finite order. vector-lattices× 44 For questions about vector lattices (aka. Riesz spaces; a type of vector space equipped with a partial order), Banach lattices and similar topics. algebraic-k-theory× 43 a tool from homological algebra that defines a sequence of functors from rings to abelian groups. It has many applications in algebraic geometry. See also (topological-k-theory). gauss-sums× 43 For questions on Gauss sums, a particular kind of finite sum of roots of unity. group-extensions× 43 divisor-counting-function× 43