Galoitica: Journal of Mathematical Structures and Applications

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Galoitica: Journal of Mathematical Structures and Applications

Volume 6 , Issue 2 , PP: 08-16, 2023 | Cite this article as | XML | Html | PDF

A Study of the Eigenvalues of the Matrix Of Distance Reciprocals in K[r, n-r] And The Cycle C_n

Lee Xu 1 *

  • 1 University of Chinese Academy of Sciences, CAS, Mathematics Department, Beijing, China - (Leexu1244@yahoo.com)
  • Doi: https://doi.org/10.54216/GJMSA.060201

    Received: January 12, 2022 Revised: May 02, 2023 Accepted: July 03, 2023
    Abstract

    This paper Deals with the complete bipartite graph K(r, n-r) and the cycle . The matrix of concern is the matrix B which is the (n, n) matrix and whose non zero entries are the reciprocals of the non zero entries of the distance matrix D. A complete characterization of the spectrum of B and a set of n independent eigenvectors of B will be presented. Two special cases will be mentioned, namely the star K(1, n-1) and the graph K(2, n-2). We will also look at the case of infinite graph, i. e if the size n grows big while r stays finite. Finally, some numerical data will be presented. As for the cycle, we present the complete set of eigenvalues of the matrix B.

    Keywords :

    Infinite Graph , Matrix , cycle.  ,

    References

    [1]Behzad M. et al. (1979): Graphs and Digraphs. Prindle, Weber and Shmidt. Boston. U.S.A

    [2]Lancaster M. et al. (1985): Theory of Matrices. Second edition. Academic Press. New York. NY. U.S.A

    [3]Richard Bellman (1985): Introduction to Matrix Theory. Siam. Pheladelphia. PA. U.S.A

    [4]Robin L. Wilson et al. (1978): Selected Topics in Graph Theory. Academic Press. New York. U.S.A

    [5]Ruzieh S. (1989): Some Applications of Matrices Related to Graphs. Unpublished Ph. D dissertation. Clarkson University. Potsdam. NY. U.S.A

    [6]Trinajstic N. et al. (1983): On the Distance Polynomial of a Graph. Aplikace Matimatiky, 28. Pp 357 - 363

     

    Cite This Article As :
    Lee Xu. "A Study of the Eigenvalues of the Matrix Of Distance Reciprocals in K[r, n-r] And The Cycle C_n." Full Length Article, Vol. 6, No. 2, 2023 ,PP. 08-16 (Doi   :  https://doi.org/10.54216/GJMSA.060201)
    Lee Xu. (2023). A Study of the Eigenvalues of the Matrix Of Distance Reciprocals in K[r, n-r] And The Cycle C_n. Journal of , 6 ( 2 ), 08-16 (Doi   :  https://doi.org/10.54216/GJMSA.060201)
    Lee Xu. "A Study of the Eigenvalues of the Matrix Of Distance Reciprocals in K[r, n-r] And The Cycle C_n." Journal of , 6 no. 2 (2023): 08-16 (Doi   :  https://doi.org/10.54216/GJMSA.060201)
    Lee Xu. (2023). A Study of the Eigenvalues of the Matrix Of Distance Reciprocals in K[r, n-r] And The Cycle C_n. Journal of , 6 ( 2 ), 08-16 (Doi   :  https://doi.org/10.54216/GJMSA.060201)
    Lee Xu. A Study of the Eigenvalues of the Matrix Of Distance Reciprocals in K[r, n-r] And The Cycle C_n. Journal of , (2023); 6 ( 2 ): 08-16 (Doi   :  https://doi.org/10.54216/GJMSA.060201)
    Lee Xu, A Study of the Eigenvalues of the Matrix Of Distance Reciprocals in K[r, n-r] And The Cycle C_n, Journal of , Vol. 6 , No. 2 , (2023) : 08-16 (Doi   :  https://doi.org/10.54216/GJMSA.060201)