# 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:
 branch-cuts× 60 central-limit-theorem× 60 algebraic-identities× 60 reflection× 60 spherical-harmonics× 60 Questions on spherical harmonics, a set of basis functions that satisfy an orthogonality relation over the sphere. meta-math× 59 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-… constants× 59 For questions about mathematical constants, that are "significantly interesting in some way". latin-square× 59 For questions on or pertaining to Latin squares. krull-dimension× 58 For questions about or related to the Krull dimension. hash-function× 58 For questions about hash functions: functions from a big set to a smaller one such that the same output $f(x_1)=f(x_2)$ for different input $x_1\ne x_2$ is unlikely, especially if $x_2$ differs from $… clustering× 58 grouping (partitioning) a set of objects so that items in the same group are more similar to each other than to items in different groups, where the notion of similarity may be variously… nested-radicals× 58 spectral-sequences× 58 (STUB) A method of computing homology groups by taking a sequence of approximations. Particularly useful in algebraic topology. simplex× 58 topological-k-theory× 58 a generalized cohomology theory, for which$K_0(X)$is the Grothendieck group of isomorphism classes of vector bundles over topological space$X$. See also [tag:algebraic-k-the… uniform-integrability× 57 For questions about families of uniformly integrable random variables. Use the tags [tag: measure-theory] or [tag: probablity-theory]. noncommutative-geometry× 57 a study of noncomutative algebras from geometrical point of view. The motivation of this approach is Gelfand representation theorem, which shows that every commutative C*-al… harmonic-numbers× 57 For questions regarding harmonic numbers, which are partial sums of the harmonic series. higher-category-theory× 56 formal-grammar× 56 dihedral-groups× 56 For questions on dihedral groups, the group of symmetries of a regular polygon, including both rotations and reflections optimal-control× 56 quotient-spaces× 56 sieve-theory× 55 Sieve theory deals with number theoretic sieves, and sifted sets. E.g. the Sieve of Eratosthenes, Brun sieve, and other modern sives. error-propagation× 55 For questions on propagation of errors. geometric-algebras× 54 Clifford algebras over the real numbers. They are applied in geometry and theoretical physics. lambert-w× 54 For questions related to the Lambert-W or product log function. This is the inverse function of$f(z) = ze^z\$. decision-theory× 54 For questions regarding formal decision problems. In contrast, questions involving strategic aspects (where the solution depends on the behavior of others) are discussed in game theory. parameter-estimation× 54 matrix-decomposition× 54 multinomial-coefficients× 53 For questions related to multinomial coefficients, a generalization of binomial coefficients. sage× 53 For questions concerning Sage. Consider whether your question would be a better fit at [ask Sage](http://ask.sagemath.org/). big-numbers× 53 epsilon-delta× 53 infinite-groups× 52 algorithmic-game-theory× 52