Tags
A tag is a keyword or label that categorizes your question with other, similar questions.
For problems that are related to gamma-family probability distributions.
518 questions
For problems that involve a specific set of locations of points. Locus is an important part of the coordinate geometry. In geometry, a locus (plural: loci) is a set of all points (commonly, a line, a line segment, a curve or a surface), whose location satisfies or is determined by one or more specified conditions.
517 questions
This tag is for questions relating to linear partial differential equations, in which the dependent
variable (and its derivatives) appear in terms with degree at most one
516 questions
For questions about the numerical value separating the higher half of a data sample, a population, or a probability distribution, from the lower half.
515 questions
This tag is for questions relating to "formal power series" which can be considered either as an extension of the polynomial to a possibly infinite number of terms or as a power series in which the variable is not assigned any value.
515 questions
For questions about algebras, their properties, and their structures. Use [tag:algebra-precalculus] or [tag:abstract-algebra] if your question is about algebra, not algebras.
514 questions
In mathematical optimization, the Karush–Kuhn–Tucker (KKT) conditions are first order necessary conditions for a solution in nonlinear programming to be optimal, provided that some regularity conditions are satisfied.
511 questions
For questions related to multinomial coefficients, a generalization of binomial coefficients.
507 questions
For questions about local field, which is a special type of field that is a locally compact topological field with respect to a non-discrete topology.
506 questions
For questions about separable spaces, i.e., topological spaces containing a countable dense set.
504 questions
This tag is for questions relating to Unitary Matrices which are comprise a class of matrices that have the remarkable properties that as transformations they preserve length, and preserve the angle between vectors.
502 questions
Tetration is iterated exponentiation, just as exponentiation is iterated multiplication. It is the fourth hyperoperation and often produces power towers that evaluate to very large numbers.
502 questions
Use this tag for questions related to Borel measures, which, on a topological space, are measures defined on all open sets.
499 questions
A branch cut is curve in the complex extending from a branch point of the function.
498 questions
For questions about infinitesimals, both in an intuitive sense as well as more rigorous settings (see also [nonstandard-analysis]).
497 questions
The characteristic polynomial of a square matrix is a polynomial that is invariant under matrix similarity and has the eigenvalues as roots.
497 questions
For questions on Catalan numbers, a sequence of natural numbers that occur in various counting problems.
497 questions
This tag is for questions regarding to "diffeomorphisms", a map between manifolds which is differentiable and has a differentiable inverse.
496 questions
Large cardinals are such cardinals whose existence cannot be proved within ZFC, and requires stronger axioms to be added to ZFC, they are often used to measure the consistency strength of a certain statement in the language of set theory.
495 questions
Questions on the packing of various (two- or three-dimensional) geometric objects.
494 questions
For questions about approximating real numbers by rational numbers.
494 questions
For questions about the Gaussian probability distribution, its definition, properties and use.
493 questions
For questions about topological vector spaces whose topology is locally convex, that is, there is a basis of neighborhoods of the origin which consists of convex open sets.
This tag has to be used with (topological-vector-spaces) and often with (functional-analysis).
491 questions
For questions related to cyclotomic polynomials and their properties.
491 questions
Two graphs $G$ and $H$ are isomorphic if they have a function $f$ which provides an exact pairing of vertices in the two graphs such that for any adjacent vertices $u,v\in \{\mbox{set of vertices of }G\}$, $f(u)$ and $f(v)$ are also adjacent in $H$.
489 questions
For questions about index notations, e.g. abstract index notation, Einstein summation convention, topics in introductive tensor calculus, Levi-Civita Symbol, Kronecker Delta symbol, proofs of vector calculus identities or fluid dynamics formulae using index notation.
488 questions
In mathematics, in particular abstract algebra, a graded ring is a ring that is a direct sum of abelian groups $R_i$ such that $R_i R_j \subset R_{i+j}$. (Def: http://en.m.wikipedia.org/wiki/Graded_ring)
486 questions
For questions about the concept of "almost everywhere", that is, questions about properties which holds everywhere, except on a set of measure 0. This is involved in probability theory as well as in the case of infinite measure space. Use the appropriate tags to specify the context.
484 questions
In mathematics, Poisson's equation is a partial differential equation of elliptic type with broad utility in electrostatics, mechanical engineering and theoretical physics.
(Def: https://en.wikipedia.org/wiki/Poisson%27s_equation)
483 questions
For questions about proving and using Jensen's inequality for convex functions. To be used necessarily with the [inequality] tag.
483 questions
For translating between natural language expressions and logic expressions.
482 questions
Let $X=(X,\tau)$ be a topological vector space whose continuous dual $X^*$ separates points (i.e., is T2). The weak topology $\tau_w$ on $X$ is defined to be the coarsest/weakest topology (that is, the topology with the fewest open sets) under which each element of $X^*$ remains continuous on $X$.
481 questions
The Sturm–Liouville equation is a particular second-order linear differential equation with boundary conditions that often occurs in the study of linear, separable partial differential equations.
481 questions
For use when asking questions about piecewise continuous functions, their properties, or the functional branch itself.
480 questions
For questions about elements which satisfy $x\cdot x=x$ where $\cdot$ is a composition law.
479 questions