Browsing Department of Mathematics and Physics by Title

Now showing items 28-31 of 31

    • Semi-Parametric Modeling of Churn Confounding Competing Risks Using Time-Dependent Covariates Among Mobile Phone Subscribers in Kenya 

      FWARU, Ndilo; Leonard, Alii; JERİTA, Mwambi; OTULO, Cyril (Istanbul University, 2023-06-01)
      Mobile phone service providers are currently experiencing high churn rates. As a result, service providers are trying to develop ways to predict churn rates and uncover why subscribers’ churn occurs. However, the task of ...

    • Sum Construction of Automorphic Symmetric Balanced Incomplete Block Designs 

      Otulo, CW; Okelo, Nyaare; Muga, Zablon; Nyakinda, JO (International Journal of Scientific Research in Mathematical and Statistical Sciences, 2020)
      - In this study Sum construction method of automorphic symmetric balanced incomplete block designs has been presented in details. Efficiency of a test design used in the Sum construction of automorphic symmetric ...

    • Symmetry-dependent analytical all-electron potential for helium atom 

      Jobunga, Eric Ouma (Elsevier, 2022-09-01)
      Electron–electron interaction is the origin of the many-body problems usually encountered in physics and chemistry. Helium atom and other two-electron systems are the simplest many-body systems in nature. The Schrödinger ...

    • The upper triangular algebra loop of degree 4 

      Johnson, Kenneth Walter; Munywoki, Michael; Smith, Jonathan DH (Charles University in Prague, Faculty of Mathematics and Physics, 2014)
      A natural loop structure is defined on the set $U_4$ of unimodular upper-triangular matrices over a given field. Inner mappings of the loop are computed. It is shown that the loop is non-associative and nilpotent, of class ...