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In the fields of functional and harmonic analysis, the Littlewood-Paley decomposition is a particular way of decomposing the phase plane which takes a single function and ...

A normalizer of a nontrivial Sylow p-subgroup of a group G.

A locally finite space is one for which every point of a given space has a neighborhood that meets only finitely many elements of any cover.

The main diagonal of a square matrix can be extracted in the Wolfram Language using Tr[m, List].

A function used to study ordinary differential equations.

A function f which may (but does not necessarily) associate a given member of the range of f with more than one member of the domain of f. For example, trigonometric ...

A pair of matrices ND^(-1) or D^(-1)N, where N is the matrix numerator and D is the denominator.

Roughly speaking, a matroid is a finite set together with a generalization of a concept from linear algebra that satisfies a natural set of properties for that concept. For ...

Numerical maximization is implemented as NMaximize[f, vars]5.0.

A set considered together with the sigma-algebra on the set.