Academic Editor: S. S. Dragomir
Copyright © 2010 Aristides I. Kechriniotis and Konstantinos K. Delibasis. This is an open access article distributed under the
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Using a Kurepa's result for Gramians, we achieve refinements of well-known generalizations of Grüss inequality in inner product spaces. These results are further applied in to derive improvements of some published trapezoid-Grüss and Ostrowki-Grüss type inequalities. Refinements of the discrete version of Grüss inequality as well as a reverse of the Schwarz inequality are also given.