Bessel type inequalities in Hilbert C*-modules
arXiv:0905.4067
Abstract
Regarding the generalizations of the Bessel inequality in Hilbert spaces which are due to Bombiari and Boas--Bellman, we obtain a version of the Bessel inequality and some generalizations of this inequality in the framework of Hilbert -modules.
11 pages, to appear in Linear Multilinear Algebra