Tags
A tag is a keyword or label that categorizes your question with other, similar questions.
This tag is for questions relating to "partition of a set" or, "set-partition", which is a grouping of the set's elements into non-empty subsets, in such a way that every element is included in exactly one subset.
770 questions
Studying graphs using algebra (for example, linear algebra and abstract algebra) as a tool.
768 questions
For questions related to the study of functions of several variables, in particular the study of holomorphic functions, automorphic group actions and forms, pseudoconvexity, complex geometry, analytic spaces, analytic sheaves.
766 questions
For questions about infinitely or arbitrarily differentiable (smooth) functions of one or several variables. To be used especially for real-valued functions; for complex-valued functions, the tag holomorphic-functions is more appropriate.
762 questions
This tag is for questions asking for combinatorial structures of maximum or minimum possible size under some constraints. Typical questions ask for bounds or the exact value of the extremal size, or for the structure of extremal configurations.
758 questions
For questions involving the application of the program Maple to mathematics.
NOTE: questions which focus primarily on the program Maple and not on its applications to mathematics are not appropriate for this site.
755 questions
For questions regarding integral domains, their structures, and properties. This tag should probably be accompanied by the Ring Theory tag. This tag is not for use for questions regarding integrals in analysis and calculus.
755 questions
This tag is for questions regarding the Matrix Norm, a vector norm in a vector space whose elements (vectors) are matrices (of given dimensions).
754 questions
For questions about adjoint functors from category theory. Use in conjunction with the tag (category-theory).
754 questions
For questions about Stokes' theorem. Stokes' theorem relates the integral of a differential form over the boundary of some orientable manifold M is equal to the integral of its exterior derivative over the whole of M.
750 questions
Geometric group theory is the study of finitely generated groups via exploring the connections between algebraic properties of such groups and topological and geometric properties of spaces on which these groups act.
Consider using with the (group-theory) tag.
750 questions
A topos (plural topoi, toposes) is a category that behaves like the category of sheaves of sets on a topological space. Topos theory consists of the study of Grothendieck topoi, used in algebraic geometry, and the study of elementary topoi, used in logic.
749 questions
Use this tag for questions about (not necessarily periodic) tilings of metric spaces, their combinatorial, topological and dynamical properties, as well as basic definitions and concepts.
745 questions
For questions about/on finding the arc length of a curve/parametrized curve
743 questions
For questions on eigenfunctions, each of a set of independent functions that are the solutions to a given differential equation.
741 questions
For questions about graphs for which the set of vertices can be divided into two disjoint subsets such that no edge of the graph joins two vertices from same subset.
740 questions
For questions on dihedral groups, the group of symmetries of a regular polygon, including both rotations and reflections
738 questions
For questions concerning various representation of integers as sums of squares, which are studied in number theory.
737 questions
"The matrix exponential is a matrix function on square matrices analogous to the ordinary exponential function."
735 questions
Forcing is a set theoretic method used mainly for proving independence results. For questions about forcing function please use (differential-equations).
734 questions
Discrete geometry includes the study of covering, illumination, packing, convex bodies, convex polytopes, and other metric geometry.
733 questions
For questions about simplicial sets (functors from simplex category to sets), simplicial (co)algebras and simplicial objects in other categories; geometric realization, model structures, Dold-Kan correspondence etc. Please do not use for questions about geometry of simplices nor about triangulations.
732 questions
This covers all transformations of functions by integrals, including but not limited to the Radon, X-Ray, Hilbert, Mellin transforms. Use (wavelet-transform), (laplace-transform) for those respective transforms, and use (fourier-analysis) for questions about the Fourier and Fourier-sine/cosine transforms.
731 questions
The semidirect product is a construction in group theory generalizing the direct product. It arises as the structure of a group $G$ with a normal subgroup $N$ having a complement $N$.
730 questions
Questions pertaining to certain sets of polynomials that satisfy an orthogonality criterion with respect to some specified inner product.
726 questions
This tag is for questions relating to functors, which is a mapping from one category into another that is compatible with the category structure. Functors exist in both covariant and contravariant types.
725 questions
In mathematics, a principal bundle is a mathematical object which formalizes some of the essential features of the Cartesian product $X\times G$ of a space $X$ with a group $G$.
722 questions
For questions related to valuation functions on a field, and their corresponding valuation rings.
721 questions
This tag is for various question on numerical calculus / numerical analysis which concerned with all aspects of the numerical solution of a problem, from the theoretical development and understanding of numerical methods to their practical implementation as reliable and efficient computer programs.
718 questions
This tag is for questions related to absolute convergence of a series.
718 questions
For mathematical questions related to programming, and questions where a computer-aided solution is strongly suggested. A strong connection with a mathematical topic is needed to make programming questions on-topic.
This should not be the only tag. Consider also using the tags (algorithms), (numerical-methods), or (linear-programming).
717 questions
For questions concerning the popular computational software program published by Wolfram Research. (Note: you are more likely to get quicker and more accurate response if you ask the question on their user forum or on the Mathematica Stack Exchange site.)
714 questions
For questions on holomorphic functions, complex-valued functions of one or more complex variables that are complex differentiable in a neighborhood of every point in its domain.
713 questions
For questions about the two kinds of Stirling numbers and related topics, such as Lah numbers.
709 questions
In mathematics, intersection theory is a branch of algebraic geometry, where subvarieties are intersected on an algebraic variety, and of algebraic topology, where intersections are computed within the cohomology ring. (Ref: http://en.m.wikipedia.org/wiki/Intersection_theory). Do not use this tag for elementary problems in linear algebra or geometry. (e.g. determining whether two lines intersect)
701 questions