Matrix: Gaertner/nopoly

Description: Structuresymmetric Matrix nopoly K. Gaertner ETH Zurich Jan 1998.

Gaertner/nopoly graph
(undirected graph drawing)

Gaertner/nopoly

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  • Matrix group: Gaertner
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  • download as a MATLAB mat-file, file size: 137 KB. Use UFget(442) or UFget('Gaertner/nopoly') in MATLAB.
  • download in Matrix Market format, file size: 139 KB.
  • download in Rutherford/Boeing format, file size: 111 KB.

    Matrix properties
    number of rows10,774
    number of columns10,774
    nonzeros70,842
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetrysymmetric
    typeinteger
    structuresymmetric
    Cholesky candidate?yes
    positive definite?no

    authorK. Gaertner
    editorF. Grund
    date2001
    kindundirected weighted graph
    2D/3D problem?no

    SVD-based statistics:
    norm(A)23.2439
    min(svd(A))1.91736e-15
    cond(A)1.21229e+16
    rank(A)10,773
    null space dimension1
    full numerical rank?no
    singular value gap1.49626e+11

    singular values (MAT file):click here
    SVD method used:s = svd (full (A)) ;
    status:ok

    Gaertner/nopoly svd

    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.