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Browsing by Author "Kharaghani, Hadi"

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Browsing by Author "Kharaghani, Hadi"

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  • Chowdhury, S M Erfanul Kabir; University of Lethbridge. Faculty of Arts and Science. (Lethbridge, Alta. : University of Lethbridge, Dept. of Mathematics and Computer ScienceArts and ScienceDepartment of Mathematics and Computer Science, 2015)
    This thesis is mainly concerned with the orthogonal designs of Baumert-Hall array type, OD(4n;n,n,n,n) where n=2k, k is odd integer. For every odd prime power p^r, we construct an infinite class of amicable T-matrices ...
  • Gholamiangonabadi, Hamed (Lethbridge, Alta. : University of Lethbridge, Dept. of Mathematics and Computer Science, c2012Arts and ScienceDepartment of Mathematics and Computer Science, 2012)
    Our main aim in this thesis is to produce new T-matrices from the set of existing T-matrices. In Theorem 4.3 a multiplication method is introduced to generate new T-matrices of order st, provided that there are some ...
  • Sasani, Sara; University of Lethbridge. Faculty of Arts and Science. (Lethbridge, Alta. : University of Lethbridge, Dept. of Mathematics and Computer ScienceArts and ScienceDepartment of Mathematics and Computer Science, 2015)
    This thesis is an examination of the theory of association schemes. A part of this thesis focuses on the relation between association schemes and different combinatorial objects. Special attention is paid to the notion ...
  • Ghaderpour, Ebrahim; University of Lethbridge. Faculty of Arts and Science (Lethbridge, Alta. : University of Lethbridge, Dept. of Mathematics and Computer ScienceArts and ScienceDepartment of Mathematics and Computer Science, 2013)
    An orthogonal design of order n and type (s1; : : : ; s`), denoted OD(n; s1; : : : ; s`), is a square matrix X of order n with entries from f0; x1; : : : ; x`g, where the xj's are commuting variables, that satis es XXt ...
  • Best, Darcy; University of Lethbridge. Faculty of Arts and Science (Lethbridge, Alta. : University of Lethbridge, Dept. of Mathematics and Computer Science, 2013Arts and ScienceDepartment of Mathematics and Computer Science, 2013)
    This thesis introduces unit weighing matrices, a generalization of Hadamard matrices. When dealing with unit weighing matrices, a lot of the structure that is held by Hadamard matrices is lost, but this loss of rigidity ...
  • Jahanbakht, Nafiseh; University of Lethbridge. Faculty of Arts and Science (Lethbridge, Alta. : University of Lethbridge, Dept. of Mathematics and Computer Science, c2010Arts and ScienceDepartment of Mathematics and Computer Science, 2010)
    The energy of a graph is the sum of the absolute values of the eigenvalues of its adjacency matrix. The concept is related to the energy of a class of molecules in chemistry and was first brought to mathematics by ...
  • Behbahani, Majid; University of Lethbridge. Faculty of Arts and Science (Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2004Arts and ScienceDepartment of Mathematics and Computer Science, 2004)
    Our main aim in this thesis is to study and search for orthogonal matrices which have a certain kind of block structure. The most desirable class of matrices for our purpose are orthogonal designs constructible from 16 ...