# 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:
 maxima-software× 37 For questions concerning the open source computational software program Maxima. monomial-ideals× 37 power-towers× 37 For questions pertaining to power towers: expressions like a^(b^(c^d))), which result from iterated exponentiation. The "hyperoperation" tag may be appropriate, too. toric-geometry× 37 nilpotence× 36 quasicoherent-sheaves× 36 algebraic-k-theory× 36 a tool from homological algebra that defines a sequence of functors from rings to abelian groups. It has many applications in algebraic geometry. See also (topological-k-theory). etale-cohomology× 36 goldbachs-conjecture× 35 For questions about Goldbach's conjecture: every even integer greater than two is the sum of two primes. birational-geometry× 35 magic-square× 35 an arrangement of $n^2$ numbers, usually distinct integers, in a square, such that the n numbers in all rows, all columns, and both diagonals sum to the same constant. ht… ricci-flow× 34 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… social-choice-theory× 34 For questions regarding the formal analysis of collective decision problems. spheres× 34 For geometrical problems involving spheres. Use the tag (geometry) as well. For intrinsic geometry of spheres, see (spherical-geometry). inversive-geometry× 34 Questions related to Inversive Geometry and its applications. gambling× 34 stable-homotopy-theory× 33 stereographic-projections× 33 For question about stereographic projection, a particular mapping that projects a sphere onto a plane. subgradient× 32 transfinite-recursion× 32 Questions dealing with set-theoretic functions defined by transfinite recursion. gauss-sums× 32 For questions on Gauss sums, a particular kind of finite sum of roots of unity. constraint-programming× 32 a particular form of optimization modeling that tends to be well-suited for combinatorial models like scheduling and planning. local-field× 32 mental-arithmetic× 32 Mental arithmetic comprises arithmetical calculations using only the human brain, with no help from calculators, computers, or pen and paper. music-theory× 31 percentile× 31 solid-angle× 31 semi-riemannian-geometry× 31 Generalisation of (riemannian-geometry) where the metric is no longer required to be positive definite. The symmetry and non-degeneracy conditions are still kept. The particular case where the metric … distribution-tails× 31 data-mining× 31 group-extensions× 31 galois-cohomology× 31 symplectic-linear-algebra× 31 Questions about vector spaces equipped with a symplectic form, a non-degenerate, skew-symmetric bilinear form. torsion-groups× 30 For questions about torsion groups and their properties. A torsion group is a group in which every element has finite order. euler-product× 30 For questions on Euler products, an expansion of a Dirichlet series into an infinite product indexed by prime numbers. coalgebras× 30