• SJSU Singular Matrix Database

    SJSU Singular Matrix Database: GHS_indef group.

  • Click here for a description of the GHS_indef 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_indef/aug2d GHS_indef/
    aug2d
    326 MAT,
    MM,
    RB
    29,008 29,008 19,208 19,208 9,800 0.6622 Inf 1.9e+022 0.0091% integer
    sym.
    GHS_indef/aug2dc GHS_indef/
    aug2dc
    321 MAT,
    MM,
    RB
    30,200 30,200 20,000 20,000 10,200 0.6623 Inf 2.5e+022 0.0088% integer
    sym.
    GHS_indef/aug3dcqp GHS_indef/
    aug3dcqp
    455 MAT,
    MM,
    RB
    35,543 35,543 35,543 28,387 7,156 0.7987 4.9e+015 1.0014 0.01% real
    sym.
    GHS_indef/bloweybq GHS_indef/
    bloweybq
    342 MAT,
    MM,
    RB
    10,001 10,001 10,001 9,964 37 0.9963 4.2e+018 1.1134 0.05% real
    sym.
    GHS_indef/c-68 GHS_indef/
    c-68
    514 MAT,
    MM,
    RB
    64,810 64,810 64,810 64,801 9 0.9999 5.3e+012 1.0742 0.013% real
    sym.
    GHS_indef/exdata_1 GHS_indef/
    exdata_1
    518 MAT,
    MM,
    RB
    6,001 6,001 6,001 6,000 1 0.9998 3.2e+012 1.141 6% real
    sym.
    GHS_indef/k1_san GHS_indef/
    k1_san
    480 MAT,
    MM,
    RB
    67,759 67,759 67,758 67,758 1 1.0000 Inf 2.5e+020 0.012% real
    sym.
    GHS_indef/laser GHS_indef/
    laser
    137 MAT,
    MM,
    RB
    3,002 3,002 3,000 3,000 2 0.9993 Inf 3.8e+014 0.1% real
    sym.
    GHS_indef/ncvxqp1 GHS_indef/
    ncvxqp1
    481 MAT,
    MM,
    RB
    12,111 12,111 12,111 7,087 5,024 0.5852 2.4e+029 1.7446 0.05% real
    sym.
    GHS_indef/ncvxqp9 GHS_indef/
    ncvxqp9
    398 MAT,
    MM,
    RB
    16,554 16,554 16,554 14,617 1,937 0.8830 9.1e+018 1.0017 0.02% real
    sym.
    GHS_indef/olesnik0 GHS_indef/
    olesnik0
    506 MAT,
    MM,
    RB
    88,263 88,263 88,263 88,262 1 1.0000 2.5e+019 2.9e+013 0.0096% real
    sym.
    GHS_indef/sit100 GHS_indef/
    sit100
    417 MAT,
    MM,
    RB
    10,262 10,262 10,262 10,261 1 0.9999 1.3e+016 2.6e+011 0.058% real
    sym.
    GHS_indef/stokes64 GHS_indef/
    stokes64
    443 MAT,
    MM,
    RB
    12,546 12,546 12,546 12,544 2 0.9998 2.8e+016 2.7e+007 0.089% real
    sym.
    GHS_indef/stokes64s GHS_indef/
    stokes64s
    437 MAT,
    MM,
    RB
    12,546 12,546 12,546 12,544 2 0.9998 2.1e+017 8.7e+006 0.089% real
    sym.

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