In mathematics, the term Beurling algebra is used for various different algebras introduced by . Usually it is an algebra of periodic functions with Fourier series

Example We may consider the algebra of those functions f where the majorants

of the Fourier coefficients an are summable. In other words

Example We may consider a weight function w on such that

in which case is a unitary commutative Banach algebra.

These algebras are closely related to the Wiener algebra.

References