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    COMBINATORICS
    2007
    79views more  COMBINATORICS 2007»
    On the Spectrum of the Derangement Graph
    13 years 4 months ago
    On the Spectrum of the Derangement Graph
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    We derive several interesting formulae for the eigenvalues of the derangement graph and use them to settle affirmatively a conjecture of Ku regarding the least eigenvalue.
    Paul Renteln
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    JCT
    2010
    64views more  JCT 2010»
    Eigenvalues of the derangement graph
    13 years 3 months ago
    Eigenvalues of the derangement graph
    Download  www.math.nus.edu.sg
    Cheng Yeaw Ku, David B. Wales
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    APPML
    2006
    80views more  APPML 2006»
    Unicyclic graphs with exactly two main eigenvalues
    13 years 4 months ago
    Unicyclic graphs with exactly two main eigenvalues
    Download  madis1.iss.ac.cn
    An eigenvalue of a graph G is called a main eigenvalue if it has an eigenvector the sum of whose entries is not equal to zero, and it is well known that a graph has exactly one ma...
    Yaoping Hou, Feng Tian
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    CORR
    2011
    Springer
    215views Education» more  CORR 2011»
    Lasserre Hierarchy, Higher Eigenvalues, and Approximation Schemes for Quadratic Integer Programming with PSD Objectives
    12 years 8 months ago
    Lasserre Hierarchy, Higher Eigenvalues, and Approximation Schemes for Quadratic Integer Programming with PSD Objectives
    Download  www.cs.cmu.edu
    We present an approximation scheme for optimizing certain Quadratic Integer Programming problems with positive semidefinite objective functions and global linear constraints. Thi...
    Venkatesan Guruswami, Ali Kemal Sinop
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    SIAMDM
    2010
    89views more  SIAMDM 2010»
    Edge-Connectivity, Eigenvalues, and Matchings in Regular Graphs
    12 years 11 months ago
    Edge-Connectivity, Eigenvalues, and Matchings in Regular Graphs
    Download  www.math.uiuc.edu
    Suil O, Sebastian M. Cioaba
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