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:
× 8
a category with "morphisms between morphisms".
× 7
For questions regarding groups of even prime power order, as distinct from p-groups in general. Topics include 2-groups of maximal class, 2-groups as Sylow subgroups, and the conjecture that almost al…
× 770
is for things related to 3-dimensions. For geometry of 3-dimensional solids, please use instead (solid-geometry). For geometry that is not on a plane, but otherwise agnostic of dimensions…
× 181
categories that possess most of properties of categories of modules over a ring, e.g. abelian group structure on morphisms, existence of kernels and cokernels of morphisms, exis…
× 928
Should be used with the (group-theory) tag. A group $(G,*)$ is said to be abelian if $a*b=b*a$ for all $a,b\in G.$
× 51 × 68
for questions related to absolute convergence a series.
× 550
For questions about or involving the absolute value function.
× 21488
the study of algebraic objects. Some of the more common algebraic objects are groups, rings, fields, vector spaces, modules, and other advanced topics.
× 8
An example of a total computable function that is not primitive recursive; appears in the literature in many variants. The original three argument variant can be used to define the Ackermann numbers.
× 183
a discipline that uses mathematics and statistics to assess risk. The mathematics involved in actuarial science includes probability, statistics, finance, life insurance mathemat…
× 4
For questions dealing with additive categories.
× 80
about giving combinatorial estimates of addition and subtraction operations on Abelian groups or other algebraic objects. Key words: sum set estimates, inverse theorems, grap…
× 14
For questions on groups and rings of adeles, self-dual topological rings built on an algebraic number field.
× 208
For questions about adjoints, in the category-theoretic or inner-product-space sense, as well as about adjugate matrices.
× 489
Questions asking for advice on various mathematical matters. Be careful that your question is answerable, and also that it is not a polling question (e.g. "What is the best / your favorite way to..."…
× 260
for questions about algebraic geometry that focus on affine space. For affine mappings in linear algebra (i.e. linear mappings plus translations), please use the linear-algebra tag or another appropri…
× 38
The spectrum of a commutative ring with unit is the set of prime ideals endowed with the Zariski topology. One can define a sheaf of rings on this space : to each Zariski-open set is assigned a commut…
× 6
For problems and questions concerning the specific field of algebraic combinatorics.
× 674
an algebraic variety of dimension one. An affine algebraic curve can be described as the zero-locus of $n-1$ independent polynomials of $n$ variables in affine $n$-space over a f…
× 7051
The study of geometric objects defined by polynomial equations, as well as their generalizations: algebraic curves, such as elliptic curves, and more generally algebraic varieties, schemes, etc. Probl…
× 197
Studying graphs using algebra (for example, linear algebra and abstract algebra) as a tool.
× 352
For questions about groups which have additional structure as a algebraic varieties (the vanishing sets of collections of polynomials) which is compatible with their group structure. Consider using…
× 112
For questions regarding identities in algebraic structures, including the construction, composition, and interpretation thereof.
× 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).
× 2
× 1911
Questions related to the algebraic structure of algebraic integers
× 9 × 7 × 4950
Questions about algebraic methods and invariants to study and classify topological spaces: homotopy groups, (co)-homology groups, and beyond.
× 12693
Linear, exponential, logarithmic, polynomial, rational, and trigonometric functions, conic sections, binomial, surds, graphs and transformations of graphs, equation- and system-solving, and other symb…