Now showing items 26-29 of 29

    • On the Essential Numerical Range 

      OWEGO, Dancun Okeso (Maseno University, 2013)
      The convexity. closure and compactness of the numerical range among other properties constitute a considerable literature in operator theory. The properties of the essential numerical range and how they are related to ...
    • On the numerical ranges and Spectra of normal operators 

      KISENGO, Kibeu Samuel (Maseno university, 2010)
      The study of numerical ranges and spectra has been of great interest to many mathematicians in the past decades. In this study, we have continued to look at the numerical ranges and spectra of operators .on a Hilbert space. ...
    • Operation of mutation on Polar quivers 

      OYENGO, Michael Obiero Michael Obiero (Maseno university, 2009)
      In recent times, there has been a lot of interest in the study of quivers, both by mathematicians and theoretical physicists. We introduce a new concept of polar quivers and their mutation. The idea of polar quivers arises ...
    • Zero Divisor Graphs of Classes of Completely Primary Finite Rings of Maximal Prime Power Characteristic 

      WALWENDA, Shadrack Adero (Maseno University, 2017)
      It is well known that in a finite ring R, every element is either a zero divisor or a unit. The classification of finite rings is not fully settled. Different studies have generated interesting results on certain classes ...