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.

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For questions about artificial intelligence.
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For questions about Kalman filter.
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a space in algebraic geometry whose points are geometric objects or isomorphism classes of these kinds of objects.
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a mathematical term that describes the property of an integer's inclusion in one of two categories: even or odd. An integer is even if it is 'evenly divisible' by two and odd if it is not ev…
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For questions regarding the structure and properties of compact manifolds.
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For questions about elliptic partial differential equations. If your question is specific to the Laplace equation, see (harmonic-functions).
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the study of invariants of large matrices, in a suitable sense. It has many variations: (algebraic-k-theory), (topological-k-theory), or in the study of (operator-algebras).
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a study of noncomutative algebras from geometrical point of view. The motivation of this approach is Gelfand representation theorem, which shows that every commutative C*-al…
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for requests to translate written mathematical material from one language to another.
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For questions on the subject of "satisfiability", that is, whether there exists an interpretation/model in which a given (logical) formula is true.
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For properties of knots that remain unaffected by Reidmaster moves
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For questions involving the Legendre symbol, $\genfrac{(}{)}{}{}{a}{p}$ for integer $a$ and prime $p$.
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Question on minimal surfaces, or surfaces that have zero mean curvature.
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a vector spaces over a field $F$ equipped with a bilinear product and a multiplicative neutral element $1$. All the non-zero elements of $D$ have a multiplicative inverse. As…
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A classifying space $BG$ of a topological group $G$ is the quotient of a weakly contractible space $EG$ by a free action of $G$. When $G$ is a discrete group $BG$ has homotopy type of $K(G,1)$ and (co…
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Given $t\in I$, the arc length of a regular parametrized curve $\alpha : I \rightarrow {\bf R}^3$, from the point $t_0$, is by definition $$ s(t)=\int_{t_0}^t |\alpha'(t)| dt, $$ where $$|\alpha'(t)| …
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For question involving Bochner space, which are generalization $\mathbb L^p$ spaces in the sense that the values of the functions are themselves in function spaces.
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To be used when the technique of Integration By Parts is the dominant topic of the question.
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A tag for all questions involving a type of utility function.
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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…
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A famous problem of probability, where a person samples a set with replacement until every element of the set (I.e. the coupons) has been obtained at least once. Questions deal with the associated pro…
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flat when the right-exact "tensor by $M$" functor becomes left exact (and therefore exact). This applies to $A$-algebras as the latter are $A$-module, saying that $B$ flat over $A…
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A branch of topology that deals with the notion of a fiber bundle.
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For questions about complex manifolds.
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typically defined to be without boundaries (every point has a neighbourhood homeomorphic to an Euclidean open disc). Use this tag for the manifolds with boundaries, as well as manifolds …
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For question on Tessellations, the process of creating a two-dimensional plane using the repetition of a geometric shape with no overlaps and no gaps.
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In linear algebra, the transpose of a matrix is another matrix whose i-th row and j-th column is the j-th row and i-th column of the original matrix.
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for questions about noise. In signal processing, noise is a general term for unwanted (and, in general, unknown) modifications that a signal may suffer during capture, storage, transmissio…
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For questions about Coxeter groups, an abstract group that admits a formal description in terms of reflections.
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a sequence of numbers such that the quotient of any two successive members of the sequence is a constant called the common ratio of the sequence
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An simple graph has a symmetric matrix L = D - A associated with it called the Laplacian matrix, where D is the diagonal matrix of degrees and A is the adjacency matrix, often studied for its spectrum…