Journal of Operator Theory, Vol. 56, No. 1 (Summer 2006), pp. 3-15 (13 pages) We propose some norm estimations for sums of positive operators on Hilbert spaces, extending the ones given by ...
Linear operators form the cornerstone of analysis in Banach spaces, offering a framework in which one can rigorously study continuity, spectral properties and stability. Banach space theory, with its ...