Browsing Department of Mathematics by Author "John O Agure, Paul O Oleche"
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On Numerical and Centre Values Range
John O Agure, Paul O Oleche (Int. Journal of Math, 2010)This paper follows [1] in the quantitative study of Numerical Ranges introduced by Stampfli [9]. In particular, we consider a family of mutually orthogonal projections and investigate how a numerical range can be related ...