Quadratic functionals on modules over *-rings

Author: Ilišević Dijana  

Publisher: Akademiai Kiado

ISSN: 0081-6906

Source: Studia Scientiarum Mathematicarum Hungarica, Vol.42, Iss.1, 2005-02, pp. : 95-105

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Abstract

The aim of this paper is to give a solution to the problem of the representability of quadratic functionals, acting on modules over *-rings, by symmetric (weak) sesquilinear forms. The obtained results generalize the one given by P. Šemrl and B. Zalar to a larger class of *-rings.