Matrix: UTEP/Dubcova1

Description: Univ. Texas at El Paso, from a PDE solver

UTEP/Dubcova1 graph
(undirected graph drawing)


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  • Matrix group: UTEP
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  • download as a MATLAB mat-file, file size: 884 KB. Use UFget(1847) or UFget('UTEP/Dubcova1') in MATLAB.
  • download in Matrix Market format, file size: 928 KB.
  • download in Rutherford/Boeing format, file size: 800 KB.

    Matrix properties
    number of rows16,129
    number of columns16,129
    structural full rank?yes
    structural rank16,129
    # of blocks from dmperm1
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetrysymmetric
    Cholesky candidate?yes
    positive definite?yes

    authorL. Dubcova, J. Cerveny, and P. Solin
    editorT. Davis
    kind2D/3D problem
    2D/3D problem?yes

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD576,080
    Cholesky flop count5.0e+07
    nnz(L+U), no partial pivoting, with AMD1,136,031
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD1,255,893
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD3,308,580

    SVD-based statistics:
    null space dimension0
    full numerical rank?yes

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

    UTEP/Dubcova1 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.