# 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:
 computational-algebra× 70 an area of algebra that seeks efficient algorithms to answer fundamental problems concerning basic algebraic objects (groups, rings, fields, etc.). For questions about generic… constraints× 69 noncommutative-geometry× 69 a study of noncomutative algebras from geometrical point of view. The motivation of this approach is Gelfand representation theorem, which shows that every commutative C*-al… combinatorial-designs× 68 For questions about Combinatorial design theory, a part of combinatorial mathematics that deals with the existence, construction and properties of systems of finite sets whose arrangements satisfy gen… collatz× 68 Dynamics of the iterated map $n \to 3n+1$ if $n$ is odd and $n \to \frac n2$ if $n$ is even. Generalizations to $n \to 3n-1$ or $n \to 5n+1$ or even to $n \to pn+q$ . Other names are "$3x+1$-proble… formal-grammar× 68 complex-dynamics× 67 the study of dynamical systems of functions over complex numbers. bipartite-graph× 67 For questions about graphs with two sets of distinct vertices in which edges join vertices from different sets. bochner-spaces× 67 For question involving Bochner space, which are generalization $\mathbb L^p$ spaces in the sense that the values of the functions are themselves in function spaces. bifurcation× 67 big-numbers× 67 For questions relating to the computation, estimation and properties of extremely large quantities that are not usually used in mainstream mathematics. line-integrals× 67 an integral where the function to be integrated is evaluated along a curve. The terms path integral, curve integral, and curvilinear integral are also used. model-categories× 67 categories with three distinguished classes of morphisms: the weak equivalences, the fibrations and the cofibrations. They provide a natural setting for [tag:homotopy-theory] in a… meta-math× 65 the term for the theory in which mathematics is formalized (often PA, ZFC or similar theories). Meta-mathematical statements are statements which are evaluated at the level of the meta-… sieve-theory× 65 Sieve theory deals with number theoretic sieves, and sifted sets. E.g. the Sieve of Eratosthenes, Brun sieve, and other modern sives. surface-integrals× 65 a generalization of multiple integrals to integration over surfaces. It can be thought of as the double integral analog of the line integral. regularity-theory-of-pdes× 65 The concept of regularity concerns the smoothness of weak solutions to partial differential equations. ceiling-function× 65 The function that maps a real number $x$ to the smallest integer greater than or equal to $x$ (which is often denoted $\lceil x\rceil$. See also (floor-function). hodge-theory× 64 The study of relations between, one the one hand, the topology of a smooth manifold as encoded in the cohomology groups, and on the other, the set of solutions to the Laplace operator on differential … grassmannian× 64 In mathematics, the Grassmannian $\mathbf{Gr}(r, V)$ is a space which parameterizes all linear subspaces of a vector space $V$ of given dimension $r$. levy-processes× 64 Question related to Lévy processes, i.e. stochastically continuous processes with independent, stationary increments. translation-request× 63 for requests to translate written mathematical material from one language to another. affine-schemes× 63 The spectrum of a commutative ring with unit is the set of prime ideals endowed with the Zariski topology. One can define a sheaf of rings on this space : to each Zariski-open set is assigned a commut… utility× 63 A tag for all questions involving a type of utility function. faq× 62 meant for questions which are generalized forms of questions which get asked frequently. See tag details for more information. rigid-transformation× 62 mappings from one reference frame to another reference frame in the Euclidean space $\mathbb R^n$. They comprise translation, rotation (and sometimes reflection). More for… quadrilateral× 62 For questions about general quadrilaterals (including parallelograms, trapezoids, rhombi) and their properties. regression-analysis× 61 invariance× 61 algorithmic-game-theory× 61 coherent-sheaves× 61 universal-property× 61 z-transform× 61 a discrete analogue to the Laplace transform, in that it maps a time domain signal into a representation in complex frequency plane. noise× 60 multiplicative-function× 60 In number theory, a multiplicative function is a function defined on positive integers such that f(ab)=f(a)f(b) for a,b coprime. E.g. Euler's totient function, sum of divisors and number of divisor… prime-ideals× 59