FIDAP/ex5 graph

Matrix: FIDAP/ex5

Description: TEST MATRIX FROM FIDAP: EX5.MAT


  • UF Sparse Matrix Collection
  • Matrix group: FIDAP
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  • download as a MATLAB mat-file, file size: 1 KB. Use UFget(436) or UFget('FIDAP/ex5') in MATLAB.
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    FIDAP/ex5

    Matrix properties
    number of rows27
    number of columns27
    nonzeros279
    structural full rank?yes
    structural rank27
    # of blocks from dmperm1
    # strongly connected comp.1
    entries not in dmperm blocks0
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetrysymmetric
    typereal
    structuresymmetric
    Cholesky candidate?yes
    positive definite?yes

    authorA. Baggag, Y. Saad
    editorA. Baggag, Y. Saad
    date1994
    kindcomputational fluid dynamics problem
    2D/3D problem?yes

    Ordering statistics:AMD METIS
    nnz(chol(P*(A+A'+s*I)*P'))153 153
    Cholesky flop count9.8e+02 9.8e+02
    nnz(L+U), no partial pivoting279 279
    nnz(V) for QR, upper bound nnz(L) for LU153 183
    nnz(R) for QR, upper bound nnz(U) for LU261 297

    Maintained by Tim Davis, last updated 30-Sep-2008.
    Matrix pictures by cspy, a MATLAB function in the CSparse package.
    Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.