• SJSU Singular Matrix Database
  • Matrix group: Hollinger
  • Click here for a description of the Hollinger group.
  • Click here for a list of all matrices
  • Click here for a list of all matrix groups

  • Matrix: Hollinger/mark3jac060sc
  • Description: Jacobian from MULTIMOD Mark3, oldstack 060 (scaled)
  • download as a MATLAB mat-file, file size: 1 MB. Use SJget(474) or SJget('Hollinger/mark3jac060sc') in MATLAB.
  • download in Matrix Market format, file size: 2 MB.
  • download in Rutherford/Boeing format, file size: 1 MB.


    A singular value of A is guaranteed1 to be in the interval pictured by the blue bars around each of the calculated singular values.

    Routine svds_err, version 1.0, used with Matlab (R2008a) to calculate the 6 largest singular values and associated error bounds.
    Routine spnrank, version 1.0 with opts.tol_eigs = 1e-008, used with Matlab (R2008a) to calculate singular values 27333 to 27338 and associated error bounds.


    dmperm of Hollinger/mark3jac060sc

    scc of Hollinger/mark3jac060sc

    Matrix properties (click for a legend)  
    number of rows27,449
    number of columns27,449
    structural full rank?yes
    structural rank27,449
    numerical rank 27,335
    dimension of the numerical null space114
    numerical rank / min(size(A))0.99585
    Euclidean norm of A 2.3447e+006
    calculated singular value # 273351.3384e-005
    numerical rank defined using a tolerance
    max(size(A))*eps(norm(A)) =
    calculated singular value # 273361.271e-005
    gap in the singular values at the numerical rank:
    singular value # 27335 / singular value # 27336
    calculated condition number-2
    # of blocks from dmperm961
    # strongly connected comp.961
    entries not in dmperm blocks6,200
    explicit zero entries9,972
    nonzero pattern symmetry 7%
    numeric value symmetry 1%
    Cholesky candidate?no
    positive definite?no

    authorP. Hollinger
    editorT. Davis
    kindeconomic problem
    2D/3D problem?no

    Ordering statistics:AMD METIS DMPERM+
    nnz(chol(P*(A+A'+s*I)*P'))5,038,771 3,318,616 3,323,420
    Cholesky flop count4.0e+009 1.4e+009 1.4e+009
    nnz(L+U), no partial pivoting10,050,093 6,609,783 6,625,591
    nnz(V) for QR, upper bound nnz(L) for LU7,458,742 3,577,607 3,229,207
    nnz(R) for QR, upper bound nnz(U) for LU12,922,730 7,217,988 6,549,208

    Note that all matrix statistics (except nonzero pattern symmetry) exclude the 9972 explicit zero entries.

    Maintained by Leslie Foster, last updated 24-Apr-2009.

    Entries 5 through 14 in the table of matrix properties and the singular
    value plot were created using SJsingular code. The other plots
    and statistics are produced using utilities from the SuiteSparse package.
    Matrix color plot pictures by cspy, a MATLAB function in the CSparse package.