Matrix: Rajat/rajat05

Description: Rajat/rajat05 circuit simulation matrix

Rajat/rajat05 graph Rajat/rajat05 graph
(bipartite graph drawing) (graph drawing of A+A')

Rajat/rajat05 dmperm of Rajat/rajat05
scc of Rajat/rajat05

  • Home page of the UF Sparse Matrix Collection
  • Matrix group: Rajat
  • Click here for a description of the Rajat group.
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  • download as a MATLAB mat-file, file size: 6 KB. Use UFget(1189) or UFget('Rajat/rajat05') in MATLAB.
  • download in Matrix Market format, file size: 6 KB.
  • download in Rutherford/Boeing format, file size: 5 KB.

    Matrix properties
    number of rows301
    number of columns301
    structural full rank?yes
    structural rank301
    # of blocks from dmperm15
    # strongly connected comp.9
    explicit zero entries134
    nonzero pattern symmetry 77%
    numeric value symmetry 71%
    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 AMD1,169
    Cholesky flop count4.7e+03
    nnz(L+U), no partial pivoting, with AMD2,037
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD1,938
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD3,587

    Note that all matrix statistics (except nonzero pattern symmetry) exclude the 134 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/rajat05 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.