Schwartz space
Function space of all functions whose derivatives are rapidly decreasing
Schwartz space
In mathematics, Schwartz space S {\displaystyle {\mathcal {S}}} is the function space of all functions whose derivatives of all orders are rapidly decreasing. This space has the important property that the Fourier transform is an automorphism on this space. This property enables one, by duality, to define the Fourier transform for elements in the dual space S ∗ {\displaystyle {\mathcal {S}}^{*}} of S {\displaystyle {\mathcal {S}}} , that is, for tempered distributions. A function in the Schwartz space is sometimes called a Schwartz function. Schwartz space is named after French mathematician Laurent Schwartz.
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