Browsing Journal Articles by Title

Now showing items 21-29 of 29

    • On the Norm of Elementary Operator 

      Kingangi, Denis Njue; Agure, John Ogoji; Nyamwala, Fredrick Oluoch (Advances in Pure Mathematics, 2014-07)
      The norm of an elementary operator has been studied by many mathematicians. Varied results have been established especially on the lower bound of this norm. Here, we attempt the same problem for finite dimensional operators.

    • On The Norm of Finite Length Elementary Operator in Tensor Product of C*-Algebras 

      Muiruri, Peter Guchu; King’ang’i, Denis Njue; Wabomba, Sammy Musundi (International Journal of Mathematics and Computer Research, 2024-01)
      Many properties of Elementary operators, including spectrum, numerical ranges, compactness, rank, and norm have been studied in depth and some results have been obtained. However, little has been done in determining the ...

    • ON THE NORM OF JORDAN ELEMENTARY OPERATOR IN TENSOR PRODUCT OF C*-ALGEBRAS 

      Muiruri, Peter Guchu; King'ang'i, Denis Njue; Musundi, Sammy Wabomba (|INT Journal of Mathematics, 2024-06)
      The norm property of different types of Elementary operators has attracted a lot of researchers due to its wide range applications in functional analysis. From available literature the norm of Jordan elementary operator ...

    • On the Numerical Ranges 

      Kingangi, Denis Njue (International Journal of Scientific and Innovative Mathematical Research (IJSIMR), 2015-08)
      Properties of operators in a C*-algebra B(H) have been studied by many researchers in operator theory. This paper is an investigation of the numerical ranges of operators in B(H) . We show that zero is in the algebraic ...

    • On Unitary Invariance of Some Classes of Operators in Hilbert Spaces 

      Muhati, Linety N.; Khalagai, J. M. (Pure Mathematical Sciences, 2020)
      It is a known fact in operator theory that two similar operators have equal spectra but they do not necessarily have to belong to the same class of operators. However, under the stronger relation of unitary equivalence ...

    • Optimal Kiefer Ordering of Simplex Designs for Third-Degree Mixture Kronecker-Models with three ingredients. 

      Korir, Betty (Mathematical Theory and Modeling, 2019)
      This paper investigates the Kiefer optimality in the third-degree Kronecker model for mixture experiments. For mixture models on the simplex, a better design is obtained, by matrix majorization that yields a larger ...

    • Optimization of Split-Plot Design in the Context of Mixture Process Variable Settings 

      Wanyonyi, Samson W.; et al. (Asian Journal of Probability and Statistics, 2021-04)
      In the presence of process variables, a mixture design has become well-known in statistical modeling due to its utility in modeling the blending surface, which empirically predicts any mixture's response and serves as the ...

    • Parametric Interval Estimation of the Geeta Distribution 

      Kinyanjui, Josphat; Korir, Betty (International Journal of Statistics and Probability, 2018)
      t is well known that the sample mean is the estimator of a population mean in mathematical statistics from a given population of interest as a point estimator which assume a single number that is obtained ...

    • Parametric Point Estimation of the Geeta Distribution 

      Korir, Betty (International Journal of Statistical Distributions and Applications, 2018)
      Geeta distribution is a new discrete random variable distribution defined over all the positive integers with two parameters. This distribution belongs to the family of Location-parameter (LDPD) system and is of the form ...