• SJSU Singular Matrix Database

    SJSU Singular Matrix Database: GHS_psdef group.

  • Click here for a description of the GHS_psdef group.
  • Click here for a list of all matrix groups.

    singular
    value
    spectrum
    thumbnail
    Group /
    Name
    SJid down-
    load
    # rows # cols struct.
    rank
    num.
    rank
    dim
    null
    space
    num.
    rank /
    min(m,n)
    condest gap nnz /
    (m*n)
    type
    GHS_psdef/finance256 GHS_psdef/
    finance256
    468 MAT,
    MM,
    RB
    37,376 37,376 37,376 35,822 1,554 0.9584 Inf 2.9e+009 0.021% binary
    sym.
    GHS_psdef/ford1 GHS_psdef/
    ford1
    383 MAT,
    MM,
    RB
    18,728 18,728 18,728 18,194 534 0.9715 Inf 4.6e+011 0.029% binary
    sym.
    GHS_psdef/ford2 GHS_psdef/
    ford2
    482 MAT,
    MM,
    RB
    100,196 100,196 100,196 97,892 2,304 0.9770 Inf 4.3e+009 0.0054% binary
    sym.
    GHS_psdef/opt1 GHS_psdef/
    opt1
    487 MAT,
    MM,
    RB
    15,449 15,449 15,449 3,442 12,007 0.2228 Inf 2.3e+012 0.81% binary
    sym.
    GHS_psdef/pds10 GHS_psdef/
    pds10
    492 MAT,
    MM,
    RB
    16,558 16,558 16,558 16,519 39 0.9976 Inf 4e+010 0.055% binary
    sym.
    GHS_psdef/pwt GHS_psdef/
    pwt
    462 MAT,
    MM,
    RB
    36,519 36,519 36,519 35,475 1,044 0.9714 Inf 8.7e+008 0.024% binary
    sym.
    GHS_psdef/srb1 GHS_psdef/
    srb1
    504 MAT,
    MM,
    RB
    54,924 54,924 54,924 9,154 45,770 0.1667 Inf 4.6e+011 0.098% binary
    sym.

    Maintained by Leslie Foster, last updated 16-Feb-2009.
    See SJget to download directly into MATLAB.