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:
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Question on minimal surfaces, or surfaces that have zero mean curvature.
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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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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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For questions about artificial intelligence.
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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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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 Beta function, a special function closely related to Gamma. It is advisable to also use [special-functions] tag with this one.
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For questions regarding the structure and properties of compact manifolds.
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mappings from one reference frame to another reference frame in the Euclidean space $\mathbb R^n$. They comprise translation, rotation (and sometimes reflection). More for…
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for questions about mean-square-error. In statistics, the mean squared error (MSE) of an estimator measures the average of the squares of the errors or deviations, that is, the difference …
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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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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…
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An ordinary differential equation that generalizes the notion of "path of steepest descent." For questions on "gradients" of a function, use (multivariable-calculus) instead.
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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 questions about publishing mathematical content
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For questions involving the Legendre symbol, $\genfrac{(}{)}{}{}{a}{p}$ for integer $a$ and prime $p$.
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For questions about complex manifolds.
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In mathematics, a monotonic function (or monotone function) is a function between ordered sets that preserves or reverses the given order. This concept first arose in calculus, and was later generaliz…
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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 tag for all questions involving a type of utility function.
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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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complete if for any Cauchy sequence in $X$ it is convergent and its limit is in $X$
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For questions about linear approximations, $f(x) \approx f(a)+f'(a)(x-a)$ for $x$ around $a$.
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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 form of many-valued logic that deals with approximate, rather than fixed and exact reasoning. (Def: http://en.m.wikipedia.org/wiki/Fuzzy_logic)
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a group $G$ whose elements are invertible $n \times n$ matrices over a field $F$.
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In Mathematics, set theory, a Multivalued function is defined as a left-total relation (that is, every input is associated with at least one output) in which at least one input is associated with mult…
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For questions about the structure of product space, in the context of topology or measure theory for example. Use other tags to indicate the context.
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The study of geometry of manifolds without appealing to differential calculus. It includes studies of length spaces, Alexandrov spaces, and CAT(k) spaces. The techniques are often applicable to Rieman…