ArticleOriginal scientific text

Title

On a general bidimensional extrapolation problem

Authors 1, 1

Affiliations

  1. Centro de Matemática, Facultad de Humanidades y Ciencias, Eduardo Acevedo 1139, Montevideo, Uruguay

Abstract

Several generalized moment problems in two dimensions are particular cases of the general problem of giving conditions that ensure that two isometries, with domains and ranges contained in the same Hilbert space, have commutative unitary extensions to a space that contains the given one. Some results concerning this problem are presented and applied to the extension of functions of positive type.

Bibliography

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Pages:
3-12
Main language of publication
English
Received
1990-05-07
Published
1993
Exact and natural sciences