# 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:
 spectral-sequences× 47 (STUB) A method of computing homology groups by taking a sequence of approximations. Particularly useful in algebraic topology. topological-k-theory× 47 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… reflection× 46 ordered-fields× 46 fields which have an additional structure, a linear order compatible with the field structure. This tag is for questions regarding ordered fields and their properties, as well proof… error-propagation× 46 For questions on propagation of errors. central-limit-theorem× 46 big-numbers× 45 dihedral-groups× 45 For questions on dihedral groups, the group of symmetries of a regular polygon, including both rotations and reflections invariance× 45 multinomial-coefficients× 45 For questions related to multinomial coefficients, a generalization of binomial coefficients. unit-of-measure× 45 For questions related to conversion of units. rectangles× 44 Questions about rectangles and its properties. lambert-w× 44 For questions related to the Lambert-W or product log function. This is the inverse function of $f(z) = ze^z$. hopf-algebras× 44 For questions about Hopf algebras and related concepts, such as quantum groups. algorithmic-game-theory× 44 algebraic-identities× 43 collatz× 43 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… complex-dynamics× 43 the study of dynamical systems of functions over complex numbers. higher-order-logic× 43 implicit-function-theorem× 43 The implicit function theorem gives sufficient conditions to solve a given equation for one or more of the variables as functions of the remaining variables. The basic form of the theorem is that of a… principal-bundles× 43 model-categories× 43 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… planar-graph× 43 optimal-control× 43 shape× 43 median× 42 idempotents× 42 For questions about elements which satisfy $x\cdot x=x$ where $\cdot$ is a composition law. artificial-intelligence× 42 For questions about artificial intelligence. computational-algebra× 41 an area of algebra that seeks efficient algorithms to answer fundamental problems concerning basic algebraic objects (groups, rings, fields etc). For questions about generic… decision-theory× 41 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. random-functions× 41 rubiks-cube× 40 Questions on the mathematics behind the famed toy invented by Ernő Rubik. rigid-transformation× 40 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… nested-radicals× 40 translation-request× 40 for requests to translate written mathematical material from one language to another. tessellations× 40 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.