• SJSU Singular Matrix Database

    SJSU Singular Matrix Database: Regtools group.

  • Click here for a description of the Regtools 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
    Regtools/baart_100 Regtools/
    baart_100
    233 MAT,
    MM,
    RB
    100 100 100 12 88 0.1200 3.1e+018 2.2947 100% real
    unsym.
    Regtools/baart_1000 Regtools/
    baart_1000
    236 MAT,
    MM,
    RB
    1,000 1,000 1,000 13 987 0.0130 7.8e+020 1.6808 100% real
    unsym.
    Regtools/baart_200 Regtools/
    baart_200
    234 MAT,
    MM,
    RB
    200 200 200 12 188 0.0600 5.6e+018 1.279 100% real
    unsym.
    Regtools/baart_500 Regtools/
    baart_500
    235 MAT,
    MM,
    RB
    500 500 500 12 488 0.0240 1.4e+019 1.443 100% real
    unsym.
    Regtools/foxgood_100 Regtools/
    foxgood_100
    229 MAT,
    MM,
    RB
    100 100 100 23 77 0.2300 9.5e+017 4.4195 100% real
    sym.
    Regtools/foxgood_1000 Regtools/
    foxgood_1000
    232 MAT,
    MM,
    RB
    1,000 1,000 1,000 30 970 0.0300 1.5e+021 2.3537 100% real
    sym.
    Regtools/foxgood_200 Regtools/
    foxgood_200
    230 MAT,
    MM,
    RB
    200 200 200 26 174 0.1300 1.1e+019 3.3957 100% real
    sym.
    Regtools/foxgood_500 Regtools/
    foxgood_500
    231 MAT,
    MM,
    RB
    500 500 500 29 471 0.0580 5.2e+019 2.6819 100% real
    sym.
    Regtools/gravity_100 Regtools/
    gravity_100
    237 MAT,
    MM,
    RB
    100 100 100 48 52 0.4800 4.7e+019 2.0619 100% real
    sym.
    Regtools/gravity_1000 Regtools/
    gravity_1000
    240 MAT,
    MM,
    RB
    1,000 1,000 1,000 45 955 0.0450 1.2e+021 2.0073 100% real
    sym.
    Regtools/gravity_200 Regtools/
    gravity_200
    238 MAT,
    MM,
    RB
    200 200 200 47 153 0.2350 2.1e+019 2.0198 100% real
    sym.
    Regtools/gravity_500 Regtools/
    gravity_500
    239 MAT,
    MM,
    RB
    500 500 500 46 454 0.0920 1.5e+020 2.0092 100% real
    sym.
    Regtools/heat_100 Regtools/
    heat_100
    241 MAT,
    MM,
    RB
    100 100 100 97 3 0.9700 7e+082 1.2e+014 51% real
    unsym.
    Regtools/heat_1000 Regtools/
    heat_1000
    244 MAT,
    MM,
    RB
    1,000 1,000 1,000 588 412 0.5880 Inf 1.0263 50% real
    unsym.
    Regtools/heat_200 Regtools/
    heat_200
    242 MAT,
    MM,
    RB
    200 200 200 195 5 0.9750 3.6e+152 1.1e+013 50% real
    unsym.
    Regtools/heat_500 Regtools/
    heat_500
    243 MAT,
    MM,
    RB
    500 500 500 492 8 0.9840 5.5e+270 9e+009 50% real
    unsym.
    Regtools/i_laplace_100 Regtools/
    i_laplace_100
    245 MAT,
    MM,
    RB
    100 100 100 28 72 0.2800 1e+050 7.2 76% real
    unsym.
    Regtools/i_laplace_1000 Regtools/
    i_laplace_1000
    248 MAT,
    MM,
    RB
    1,000 1,000 581 43 957 0.0430 Inf 2.2629 30% real
    unsym.
    Regtools/i_laplace_200 Regtools/
    i_laplace_200
    246 MAT,
    MM,
    RB
    200 200 193 34 166 0.1700 1.5e+306 3.127 60% real
    unsym.
    Regtools/i_laplace_500 Regtools/
    i_laplace_500
    247 MAT,
    MM,
    RB
    500 500 363 39 461 0.0780 Inf 2.5216 42% real
    unsym.
    Regtools/parallax_100 Regtools/
    parallax_100
    249 MAT,
    MM,
    RB
    26 100 26 25 75 0.9615 ? 17 100% real
    rect.
    Regtools/parallax_1000 Regtools/
    parallax_1000
    252 MAT,
    MM,
    RB
    26 1,000 26 24 976 0.9231 ? 12 100% real
    rect.
    Regtools/parallax_200 Regtools/
    parallax_200
    250 MAT,
    MM,
    RB
    26 200 26 25 175 0.9615 ? 17 100% real
    rect.
    Regtools/parallax_500 Regtools/
    parallax_500
    251 MAT,
    MM,
    RB
    26 500 26 24 476 0.9231 ? 12 100% real
    rect.
    Regtools/shaw_100 Regtools/
    shaw_100
    253 MAT,
    MM,
    RB
    100 100 100 20 80 0.2000 8e+019 5.7e+002 100% real
    sym.
    Regtools/shaw_1000 Regtools/
    shaw_1000
    256 MAT,
    MM,
    RB
    1,000 1,000 1,000 20 980 0.0200 7.3e+021 1.4e+002 100% real
    sym.
    Regtools/shaw_200 Regtools/
    shaw_200
    254 MAT,
    MM,
    RB
    200 200 200 20 180 0.1000 5.3e+020 4.3e+002 100% real
    sym.
    Regtools/shaw_500 Regtools/
    shaw_500
    255 MAT,
    MM,
    RB
    500 500 500 20 480 0.0400 2.5e+021 2.3e+002 100% real
    sym.
    Regtools/tomo_100 Regtools/
    tomo_100
    265 MAT,
    MM,
    RB
    100 100 100 98 2 0.9800 1.7e+019 4e+013 13% real
    unsym.
    Regtools/tomo_2500 Regtools/
    tomo_2500
    267 MAT,
    MM,
    RB
    2,500 2,500 2,500 2,496 4 0.9984 Inf 1.3e+012 3% real
    unsym.
    Regtools/tomo_4900 Regtools/
    tomo_4900
    268 MAT,
    MM,
    RB
    4,900 4,900 4,900 4,897 3 0.9994 7.6e+016 2.1e+011 2% real
    unsym.
    Regtools/tomo_900 Regtools/
    tomo_900
    266 MAT,
    MM,
    RB
    900 900 900 893 7 0.9922 Inf 6.2e+012 4% real
    unsym.
    Regtools/ursell_100 Regtools/
    ursell_100
    257 MAT,
    MM,
    RB
    100 100 100 98 2 0.9800 2.5e+014 2.4547 100% real
    sym.
    Regtools/ursell_1000 Regtools/
    ursell_1000
    260 MAT,
    MM,
    RB
    1,000 1,000 1,000 999 1 0.9990 1.1e+014 5 100% real
    sym.
    Regtools/ursell_200 Regtools/
    ursell_200
    258 MAT,
    MM,
    RB
    200 200 200 198 2 0.9900 1.8e+014 2.2695 100% real
    sym.
    Regtools/ursell_500 Regtools/
    ursell_500
    259 MAT,
    MM,
    RB
    500 500 500 497 3 0.9940 1.6e+014 2.175 100% real
    sym.
    Regtools/wing_100 Regtools/
    wing_100
    261 MAT,
    MM,
    RB
    100 100 100 8 92 0.0800 9.9e+019 1.3e+002 100% real
    unsym.
    Regtools/wing_1000 Regtools/
    wing_1000
    264 MAT,
    MM,
    RB
    1,000 1,000 1,000 8 992 0.0080 5.3e+022 1.3e+002 100% real
    unsym.
    Regtools/wing_200 Regtools/
    wing_200
    262 MAT,
    MM,
    RB
    200 200 200 8 192 0.0400 2.6e+020 1.3e+002 100% real
    unsym.
    Regtools/wing_500 Regtools/
    wing_500
    263 MAT,
    MM,
    RB
    500 500 500 8 492 0.0160 1.5e+021 1.3e+002 100% real
    unsym.

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