Browsing School of Biological, Physical, Mathematics & Actuarial Sciences by Subject "2-Positivity"

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    • Completely Positive Map from M4(C) to M5(C) on Positive Semidefinite Matrices 

      Winda, C. A.; Okelo, N. B.; Ong’ati, Omolo (Journal of Mathematical Analysis and Modeling, 3/29/2022)
      Positive Maps Are Essential In the Description of Quantum Systems. However, Characterization Of The Structure Of The Set Of All Positive Maps Is A Challenge In Mathematics And Mathematical Physics. We Construct A Linear ...

    • On Equality of Complete Positivity and Complete Copositivity of Positive Map 

      Windaa, C. A.; Okelo, N. B.; Ongatia, Omollo (Journal of Linear and Topological Algebra, 5/30/2022)
      In this paper we construct a 2-positive map from M4(C) to M5(C) and state the conditions under which the map is positive and completely positive (copositivity of positive). The construction allows us to create a decomposable ...