# 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:
 vector-space-isomorphism× 45 groupoids× 45 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… homogeneous-equation× 45 combinatorial-proofs× 45 Combinatorial proofs of identities use double counting and combinatorial characterizations of binomial coefficients, powers, factorials etc. They avoid complicated algebraic manipulations. combinatorial-designs× 45 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… nets× 45 a generalization of a sequence where a directed set is used as the index set instead of positive integers. Convergence of nets can be defined in a similar way as convergence of sequences. … research× 45 algebras× 44 For questions about algebras, their properties, and their structures. bifurcation× 44 automorphic-forms× 44 groebner-basis× 43 finite-element-method× 43 A method of obtaining (numerically) approximate solutions to (usually) differential equations. It consists of a method of discretization splitting the domain into disjoint subdomains over each of whic… theta-functions× 43 For questions about $\theta$ functions. utility× 42 A tag for all questions involving a type of utility function. experimental-mathematics× 42 grassmannian× 42 hamiltonian-path× 42 A path in a graph that visits each vertex exactly once. compact-manifolds× 42 For questions regarding the structure and properties of compact manifolds. symmetric-functions× 42 minimal-surfaces× 42 Question on minimal surfaces, or surfaces that have zero mean curvature. magma-cas× 42 a computer algebra system distributed by the University of Sydney, and designed for solving problems in algebra, number theory, geometry and combinatorics. mathematicians× 41 Questions about mathematicians and their lives. multiplicative-function× 41 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-twins× 41 For questions on prime twins. polylogarithm× 41 For questions about or related to polylogarithm functions. splitting-field× 41 The splitting field of a polynomial with coefficients in a field, F, is the smallest field extension to F such that the polynomial decomposes into linear factors. Often used with Galois-theory tag. statistical-mechanics× 41 dimensional-analysis× 41 deformation-theory× 41 The study of how mathematical objects (complex manifolds, associative algebras, Lie algebras) can be deformed into similar mathematical objects, at least infinitesimally. abelian-varieties× 41 tessellations× 41 For question on Tessellations, the process of creating a two-dimensional plane using the repetition of a geometric shape with no overlaps and no gaps. transformational-geometry× 40 fuzzy-logic× 40 mean-square-error× 40 legendre-polynomial× 40 For questions about Legendre polynomials, which are solutions to a particular differential equation that frequently arises in physics. popular-math× 39 Question on bits and pieces of mathematics that show up in popular media (TV, movies, comics, etc.)