Matrix: JGD_Homology/shar_te2-b3

Description: Simplicial complexes from Homology from Volkmar Welker.

JGD_Homology/shar_te2-b3 graph JGD_Homology/shar_te2-b3 graph
(bipartite graph drawing) (graph drawing of A+A')


JGD_Homology/shar_te2-b3

  • Home page of the UF Sparse Matrix Collection
  • Matrix group: JGD_Homology
  • Click here for a description of the JGD_Homology group.
  • Click here for a list of all matrices
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  • download as a MATLAB mat-file, file size: 2 MB. Use UFget(2135) or UFget('JGD_Homology/shar_te2-b3') in MATLAB.
  • download in Matrix Market format, file size: 3 MB.
  • download in Rutherford/Boeing format, file size: 2 MB.

    Matrix properties
    number of rows200,200
    number of columns200,200
    nonzeros800,800
    structural full rank?yes
    structural rank200,200
    # of blocks from dmperm1
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetry 0%
    numeric value symmetry 0%
    typeinteger
    structureunsymmetric
    Cholesky candidate?no
    positive definite?no

    authorV. Welker
    editorJ.-G. Dumas
    date2008
    kindcombinatorial problem
    2D/3D problem?no

    Notes:

    Simplicial complexes from Homology from Volkmar Welker.           
    From Jean-Guillaume Dumas' Sparse Integer Matrix Collection,      
    http://ljk.imag.fr/membres/Jean-Guillaume.Dumas/simc.html         
                                                                      
    http://www.mathematik.uni-marburg.de/~welker/                     
                                                                      
    Filename in JGD collection: Homology/shar_te2.b3.200200x200200.sms
    

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD4,376,943,613
    Cholesky flop count2.7e+14
    nnz(L+U), no partial pivoting, with AMD8,753,687,026
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD7,496,470,527
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD8,241,458,561

    For a description of the statistics displayed above, click here.

    Maintained by Tim Davis, last updated 12-Mar-2014.
    Matrix pictures by cspy, a MATLAB function in the CSparse package.
    Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.