# 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:
 normed-spaces× 321 A vector space $E$, generally over the field $\mathbb R$ or $\mathbb C$ with a map $\lVert \cdot\rVert\colon E\to \mathbb R_+$ satisfying some conditions. stochastic-calculus× 320 Questions on the calculus of stochastic processes, or processes that have a random component. numerical-linear-algebra× 319 Questions on the various algorithms used in linear algebra computations (matrix computations). distribution-theory× 308 for questions about Schwartz distributions, also known as Generalised Functions. For questions about "probability distributions", use (probability-distributions). For questions about dist… 3d× 306 is for things related to 3-dimensions. For geometry of 3-dimensional solids, please use instead (solid-geometry). For geometry that is not on a plane, but otherwise agnostic of dimensions… boolean-algebra× 303 structures which behave similar to a power set with complement, intersection and union. Questions regarding Boolean algebras as structures, or regarding functions defined from/to … regression× 301 Questions on (linear or nonlinear) regression, the fitting of functions that best approximate empirical data. inverse× 299 the process of creating the opposite. Familiar examples include multiplicative inverse $2 \mapsto 1/2$, inverting functions $f(x) \mapsto f^{-1}(x)$, matrix inverse $M \mapsto M^{-1}$ etc… tensor-products× 290 Tensor products allow us to build "linear" objects from "multilinear" ones. It can refer to: basic ones from linear algebra/module theory, or more sophisticated versions from differential/algebraic ge… vector-analysis× 288 Questions related to understanding line integrals, vector fields, surface integrals, the theorems of Gauss, Green and Stokes. Some related tags are (multivariable-calculus) and (differential-geometry)… ideals× 288 a subset of ring such that it is possible to make a quotient ring with respect to this subset. This is the most frequent use of the name ideal, but it is used in other areas of mathemat… elliptic-curves× 288 For questions regarding elliptic curves. Questions on ellipses should be tagged [conic-sections] instead. computational-geometry× 282 The study of computer algorithms which admit geometric descriptions, and geometric problems arising in association with such algorithms. The two major classes of problems are (a) efficient design of a… coordinate-systems× 281 Questions on coordinate systems, a geometric method where a point in n-dimensions is assigned a corresponding n-tuple of numbers. laplace-transform× 281 a widely used integral transform, similar to the Fourier transform. factoring× 276 For questions about finding factors of e.g. integers or polynomials riemann-surfaces× 268 For questions about Riemann Surfaces, that is compact analytic manifolds of (complex) dimension 1, and related topics. cryptography× 267 Questions on cryptography and cryptanalysis, encryption and decryption, and the making and breaking of codes and ciphers. lebesgue-integral× 265 For question about integration, where the theory is based on measures. So it's almost always used together with the tag [measure-theory], and its aim is to specify questions about integral, not only p… homotopy-theory× 262 homotopic, if one of them can by continuously deformed to another. This gives rise to an equivalence relation. A group called homotopy group can be obtained from the equivalence clas… brownian-motion× 259 Question related to Brownian motion, a stochastic process denoted $W_t$, $t\geq 0$, with independent increments, such that $W(t)-W(s)$ is normally distributed, with $0$ mean and variance $t-s$. rotations× 256 factorial× 249 Questions on the factorial function, $n!=n\times(n-1)\times\cdots\times1$. Consider using the tag (gamma-function) if dealing with noninteger arguments. divisibility× 248 for basic questions about divisibility. algebraic-curves× 248 an algebraic variety of dimension one. An affine algebraic curve can be described as the zero-locus of $n-1$ independent polynomials of $n$ variables in affine $n$-space over a f… inner-product-space× 248 a vector space equipped with an inner product. The inner product is a generalisation of the "dot" product often used in vector calculus. propositional-calculus× 246 Questions about truth tables, conjunctive and disjunctive normal forms, negation, and implication of unquantified propositions would fit very nicely under this tag. Questions about other kind of logic… partitions× 245 Questions related to the different ways of expressing an integer as a sum of integers; or, questions related to the subdivision of a set into smaller disjoint sets; questions related to the subdivisi… calculus-of-variations× 245 Questions on the calculus of variations, a subfield of calculus that deals with the optimization of functionals. ordinals× 244 transitive sets which are well-ordered by $\in$. They are canonical representatives for well-orderings under order-isomorphism. In addition to the intriguing ordinal … infinity× 242 Somewhere beyond the numbers lies the concept of Infinity. But what exactly does "infinity" mean? What rules does it obey? What interesting properties does it have? complex-geometry× 242 the study of complex manifolds and complex algebraic varieties. It is a part of both differential geometry and algebraic geometry. exponential-function× 231 For question involving exponential functions and questions on exponential growth or decay. signal-processing× 231 Questions on the mathematical aspects of signal processing. Please consider first if your question might be more suitable for http://dsp.stackexchange.com/ topological-groups× 230 a group endowed with a topology such that the group operation and inversion are continuous maps. They are useful in various areas of mathematics. Every topological vector space … gamma-function× 227 Questions on the gamma function $\Gamma(z)$ of Euler, the extension of the usual factorial $n!$ for arbitrary argument.