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:
 sheaf-cohomology× 119 the aspect of sheaf theory, concerned with sheaves of abelian groups, that applies homological algebra to make possible effective calculation of the global sections… multinomial-coefficients× 118 For questions related to multinomial coefficients, a generalization of binomial coefficients. diophantine-approximation× 117 For questions about approximating real numbers by rational numbers. golden-ratio× 117 Questions relating to the golden ratio $\varphi = \frac{1+\sqrt{5}}{2}$ group-homomorphism× 117 For questions about the group homomorphism, a function between two groups statistifying $\alpha(ab)=\alpha(a)\alpha(b)$ and its applications in group theory. Should usually be used together with the t… constants× 117 For questions about mathematical constants, that are "significantly interesting in some way". dirichlet-series× 116 For questions on Dirichlet series. line-integrals× 116 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. semidirect-product× 115 a construction in group theory generalizing the direct product. It arises as the structure of a group $G$ with a normal subgroup $N$ having a complement $N$. dihedral-groups× 115 For questions on dihedral groups, the group of symmetries of a regular polygon, including both rotations and reflections fractional-calculus× 114 Questions on the differentiation/integration of functions to arbitrary order. connections× 114 In mathematics, a connection on a fiber bundle is a device that defines a notion of parallel transport on the bundle; that is, a way to "connect" or identify fibers over nearby points. (Def: http://… catalan-numbers× 114 For questions on Catalan numbers, a sequence of natural numbers that occur in various counting problems. regularity-theory-of-pdes× 114 The concept of regularity concerns the smoothness of weak solutions to partial differential equations. infinite-groups× 114 For questions about groups where the underlying set has infinite cardinality. multisets× 113 For questions about or related to multisets, a notion similar to sets with the difference that elements can be repeated. reflection× 113 a transformation that fixes a line or plane or a more general subset. Reflections appear in geometry, linear algebra, complex analysis, differential equations, etc -- therefore, this ta… quadratic-reciprocity× 113 In number theory, the law of quadratic reciprocity is a theorem about modular arithmetic that gives conditions for the solvability of quadratic equations modulo prime numbers. (Ref: http://en.m.wikipe… monoidal-categories× 112 In mathematics, a monoidal category (or tensor category) is a category C equipped with a bifunctor ⊗ : C × C → C which is associative up to a natural isomorphism, and an object I which is both a lef… median× 112 For questions about the numerical value separating the higher half of a data sample, a population, or a probability distribution, from the lower half. clifford-algebras× 112 associative algebras constructed from quadratic forms on vector spaces. They can be viewed as generalizations of the real numbers, complex numbers, and quaternions. These algebra… finitely-generated× 112 For questions regarding finitely generated groups. If S is finite, then a group $G = \langle S\rangle$ is called finitely generated. potential-theory× 111 Potential theory concerns solutions of elliptic partial differential equations (especially Laplace's equation) that are represented by integration against a measure or a more general distribution. project-euler× 110 a series of challenging mathematical/computer programming problems. Please see the site and rules before posting. group-rings× 110 a ring constructed from a group $G$ and ring $R$. A special case of this construction is group algebra, which occurs naturally in representation theory. graph-isomorphism× 110 isomorphic if they have a function $f$ which provides an exact pairing of vertices in the two graphs such that for any adjacent vertices $u,v\in \{\mbox{set of vertices of }… homogeneous-equation× 109 called homogeneous if the following condition is satisfied: If$\phi(x)$is a solution, so is$c \phi(x)$, where c is an arbitrary (non-zero) constant. (Def: http:… algebras× 109 For questions about algebras, their properties, and their structures. pythagorean-triples× 109 Questions about Pythagorean triples, positive integer solutions to$a^2 + b^2 = c^2\$. operations-research× 108 is a discipline to apply analytical methods for better decisions. It has many synonyms such as management science, decision science and system science. matroids× 107 a common generalization of linearly independent sets and independent sets in graphs. Among other applications, they are exactly the simplical complexes in which the greedy algorithm outpu… separation-axioms× 107 properties of topological space which, roughly speaking, say in what way two points, a point and a closed set, or two closed sets can be "separated". shape× 107 biology× 107 For questions regarding mathematical concepts with applications to Biology. invariant-theory× 106 a branch of abstract algebra dealing with actions of groups on algebraic varieties, such as vector spaces, from the point of view of their effect on functions. (Def: http://en.m.wi… primality-test× 105 An algorithm for determining whether an input number is prime.