Matrix: Rajat/rajat14

Description: Rajat/rajat14 circuit simulation matrix

Rajat/rajat14 graph
(undirected graph drawing)

Rajat/rajat14 dmperm of Rajat/rajat14

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  • Matrix group: Rajat
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  • download as a MATLAB mat-file, file size: 9 KB. Use UFget(1198) or UFget('Rajat/rajat14') in MATLAB.
  • download in Matrix Market format, file size: 9 KB.
  • download in Rutherford/Boeing format, file size: 8 KB.

    Matrix properties
    number of rows180
    number of columns180
    structural full rank?yes
    structural rank180
    # of blocks from dmperm19
    # strongly connected comp.1
    explicit zero entries28
    nonzero pattern symmetrysymmetric
    numeric value symmetry 2%
    Cholesky candidate?no
    positive definite?no

    editorT. Davis
    kindcircuit simulation problem
    2D/3D problem?no

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD1,076
    Cholesky flop count7.0e+03
    nnz(L+U), no partial pivoting, with AMD1,972
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD3,853
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD15,110

    Note that all matrix statistics (except nonzero pattern symmetry) exclude the 28 explicit zero entries.

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

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

    Rajat/rajat14 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.