# 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:
 extrapolation× 28 For question on extrapolation, the process of estimating, beyond the original observation interval. finitely-generated× 28 galois-representations× 27 inverse-problems× 27 Inverse problems involve for example reconstruction of an object based on physical measurements and finding a best model/parameters out of a family given observed data. Typically the corresponding "fo… collision-detection× 27 calendar-computations× 27 for questions about combinatorial and computational issues with regards to calendar systems. A typical, well-known mathematical result in this direction is John Conway's Doomsday Algorithm… algebras× 27 For questions about algebras, their properties, and their structures. polylogarithm× 27 For questions about or related to polylogarithm functions. quantum-computation× 27 searching× 27 For questions about various search algorithms. transfinite-recursion× 27 Questions dealing with set-theoretic functions defined by transfinite recursion. ricci-flow× 26 The Ricci flow on a Riemannian manifold $(M,g)$ is determined by the geometric evolution equation $\partial_t g_{ij} = -2R_{ij}$ where $R_{ij}$ is the Ricci curvature. The Ricci flow is the main ingre… music-theory× 26 ceiling-function× 26 The function that maps a real number x to the smallest integer not less than x. (See also (floor-function).) linear-groups× 26 a group $G$ whose elements are invertible $n \times n$ matrices over a field $F$. unique-factorization-dom× 26 A commutative ring in which every non-zero non-unit element can be written as a product of prime elements, and where this product is unique up to ordering and units. Also called UFD or "factorial ring… k-theory× 25 injective-module× 25 injective if $\hom_{R}({-},I)$ is exact. The notion of injective modules is dual to the notion of a projective module. In homological algebra injective modules are used… co-algebra× 25 algebraic-k-theory× 25 automated-theorem-proving× 25 metric-geometry× 25 The study of geometry of manifolds without appealing to differential calculus. It includes studies of length spaces, Alexandrov spaces, and CAT(k) spaces. The techniques are often applicable to Rieman… quasicoherent-sheaves× 25 positive-characteristic× 25 For questions involving rings of positive characteristic, particularly those questions whose statements and hypotheses heavily rely on positive characteristic. Consider using the ring-theory tag for … power-towers× 25 For questions pertaining to power towers: expressions like a^(b^(c^d))), which result from iterated exponentiation. The "hyperoperation" tag may be appropriate, too. q-analogs× 25 for questions pretaining to q-analogs of functions, for example q-Binomials, $q$-derivatives, the q-theta function, the q-Pochammer symbol, etc. provability× 25 stable-homotopy-theory× 25 social-choice-theory× 25 For questions regarding the formal analysis of collective decision problems. topological-graph-theory× 24 For questions about topological graph theory. monads× 24 a functor from a category to itself together with two natural transformations, commonly called μ (the "multiplication") and η (the "unit"), satisfying conditions that make μ monoidal and η … absolute-convergence× 24 for questions related to absolute convergence a series. galois-cohomology× 24 kolmogorov-complexity× 23 Kolmogorov complexity concerns the size of the shortest program that generates a given string. legendre-polynomial× 23 For questions about Legendre polynomials, which are solutions to a particular differential equation that frequently arises in physics. affine-schemes× 23