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A Kähler metric is a Riemannian metric g on a complex manifold which gives M a Kähler structure, i.e., it is a Kähler manifold with a Kähler form. However, the term "Kähler ...

A set S and a binary operator * are said to exhibit closure if applying the binary operator to two elements S returns a value which is itself a member of S. The closure of a ...

The Laplacian for a scalar function phi is a scalar differential operator defined by (1) where the h_i are the scale factors of the coordinate system (Weinberg 1972, p. 109; ...

Euler's series transformation is a transformation that sometimes accelerates the rate of convergence for an alternating series. Given a convergent alternating series with sum ...

A projection matrix P is an n×n square matrix that gives a vector space projection from R^n to a subspace W. The columns of P are the projections of the standard basis ...

An operator A^~ such that A^~^2=A^~ or an element of an algebra x such that x^2=x.

A basis, form, function, etc., in two or more variables is said to be multilinear if it is linear in each variable separately.

An operator in logic which returns either true or false.

An operator definition of a function. A Rodrigues formula may be converted into a Schläfli integral.

The word "spectrum" confusingly has a number of unrelated meanings in various branches of mathematics.