• SJSU Singular Matrix Database

    SJSU Singular Matrix Database: LPnetlib group.

  • Click here for a description of the LPnetlib 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
    LPnetlib/lp_25fv47 LPnetlib/
    lp_25fv47
    339 MAT,
    MM,
    RB
    821 1,876 820 820 1,056 0.9988 ? Inf 0.7% real
    rect.
    LPnetlib/lp_bnl1 LPnetlib/
    lp_bnl1
    323 MAT,
    MM,
    RB
    643 1,586 642 642 944 0.9984 ? 4.2e+058 0.54% real
    rect.
    LPnetlib/lp_bore3d LPnetlib/
    lp_bore3d
    278 MAT,
    MM,
    RB
    233 334 232 231 103 0.9914 ? 4.1e+013 2% real
    rect.
    LPnetlib/lp_brandy LPnetlib/
    lp_brandy
    282 MAT,
    MM,
    RB
    220 303 193 193 110 0.8773 ? 1.1e+012 3% real
    rect.
    LPnetlib/lp_cre_a LPnetlib/
    lp_cre_a
    348 MAT,
    MM,
    RB
    3,516 7,248 3,428 3,423 3,825 0.9735 ? 5.4e+012 0.071% real
    rect.
    LPnetlib/lp_cre_c LPnetlib/
    lp_cre_c
    345 MAT,
    MM,
    RB
    3,068 6,411 2,986 2,981 3,430 0.9716 ? 6.5e+012 0.081% real
    rect.
    LPnetlib/lp_cycle LPnetlib/
    lp_cycle
    360 MAT,
    MM,
    RB
    1,903 3,371 1,875 1,875 1,496 0.9853 ? 2.6e+009 0.33% real
    rect.
    LPnetlib/lp_d6cube LPnetlib/
    lp_d6cube
    426 MAT,
    MM,
    RB
    415 6,184 404 404 5,780 0.9735 ? 2.4e+014 1% integer
    rect.
    LPnetlib/lp_degen2 LPnetlib/
    lp_degen2
    312 MAT,
    MM,
    RB
    444 757 444 442 315 0.9955 ? 3.1e+013 1% integer
    rect.
    LPnetlib/lp_degen3 LPnetlib/
    lp_degen3
    382 MAT,
    MM,
    RB
    1,503 2,604 1,503 1,501 1,103 0.9987 ? 6e+012 0.65% integer
    rect.
    LPnetlib/lp_dfl001 LPnetlib/
    lp_dfl001
    512 MAT,
    MM,
    RB
    6,071 12,230 6,071 6,058 6,172 0.9979 ? 8.6e+012 0.048% real
    rect.
    LPnetlib/lp_greenbea LPnetlib/
    lp_greenbea
    379 MAT,
    MM,
    RB
    2,392 5,598 2,389 2,389 3,209 0.9987 ? 1.2e+014 0.23% real
    rect.
    LPnetlib/lp_greenbeb LPnetlib/
    lp_greenbeb
    377 MAT,
    MM,
    RB
    2,392 5,598 2,389 2,389 3,209 0.9987 ? 1.2e+014 0.23% real
    rect.
    LPnetlib/lp_ken_07 LPnetlib/
    lp_ken_07
    318 MAT,
    MM,
    RB
    2,426 3,602 2,426 2,377 1,225 0.9798 ? 2.6e+012 0.096% integer
    rect.
    LPnetlib/lp_modszk1 LPnetlib/
    lp_modszk1
    298 MAT,
    MM,
    RB
    687 1,620 686 686 934 0.9985 ? 6.7e+019 0.28% real
    rect.
    LPnetlib/lp_pds_02 LPnetlib/
    lp_pds_02
    361 MAT,
    MM,
    RB
    2,953 7,716 2,953 2,942 4,774 0.9963 ? 5e+013 0.073% integer
    rect.
    LPnetlib/lp_scorpion LPnetlib/
    lp_scorpion
    274 MAT,
    MM,
    RB
    388 466 388 358 108 0.9227 ? 2.5e+013 0.85% real
    rect.
    LPnetlib/lp_shell LPnetlib/
    lp_shell
    300 MAT,
    MM,
    RB
    536 1,777 536 535 1,242 0.9981 ? 2.4e+013 0.37% integer
    rect.
    LPnetlib/lp_ship04l LPnetlib/
    lp_ship04l
    303 MAT,
    MM,
    RB
    402 2,166 360 360 1,806 0.8955 ? 8.8e+012 0.73% real
    rect.
    LPnetlib/lp_ship04s LPnetlib/
    lp_ship04s
    286 MAT,
    MM,
    RB
    402 1,506 360 360 1,146 0.8955 ? 1.2e+013 0.73% real
    rect.
    LPnetlib/lp_ship08l LPnetlib/
    lp_ship08l
    316 MAT,
    MM,
    RB
    778 4,363 712 712 3,651 0.9152 ? 6.1e+012 0.38% real
    rect.
    LPnetlib/lp_ship08s LPnetlib/
    lp_ship08s
    308 MAT,
    MM,
    RB
    778 2,467 712 712 1,755 0.9152 ? 7.8e+012 0.37% real
    rect.
    LPnetlib/lp_ship12l LPnetlib/
    lp_ship12l
    322 MAT,
    MM,
    RB
    1,151 5,533 1,042 1,042 4,491 0.9053 ? 5.1e+012 0.26% real
    rect.
    LPnetlib/lp_ship12s LPnetlib/
    lp_ship12s
    307 MAT,
    MM,
    RB
    1,151 2,869 1,042 1,042 1,827 0.9053 ? 5.4e+012 0.25% real
    rect.
    LPnetlib/lp_sierra LPnetlib/
    lp_sierra
    317 MAT,
    MM,
    RB
    1,227 2,735 1,227 1,217 1,518 0.9919 ? 7.6e+009 0.24% integer
    rect.
    LPnetlib/lp_standgub LPnetlib/
    lp_standgub
    283 MAT,
    MM,
    RB
    361 1,383 360 360 1,023 0.9972 ? 4.5e+016 0.67% real
    rect.
    LPnetlib/lp_tuff LPnetlib/
    lp_tuff
    299 MAT,
    MM,
    RB
    333 628 302 302 326 0.9069 ? 2.2e+010 2% real
    rect.
    LPnetlib/lp_wood1p LPnetlib/
    lp_wood1p
    358 MAT,
    MM,
    RB
    244 2,595 244 243 2,352 0.9959 ? 8e+009 11% real
    rect.
    LPnetlib/lpi_box1 LPnetlib/
    lpi_box1
    272 MAT,
    MM,
    RB
    231 261 231 214 47 0.9264 ? 9.9e+013 1% integer
    rect.
    LPnetlib/lpi_cplex2 LPnetlib/
    lpi_cplex2
    275 MAT,
    MM,
    RB
    224 378 224 223 155 0.9955 ? 8.1e+013 1% real
    rect.
    LPnetlib/lpi_ex72a LPnetlib/
    lpi_ex72a
    271 MAT,
    MM,
    RB
    197 215 197 192 23 0.9746 ? 5.5e+013 1% integer
    rect.
    LPnetlib/lpi_ex73a LPnetlib/
    lpi_ex73a
    270 MAT,
    MM,
    RB
    193 211 193 188 23 0.9741 ? 7.5e+013 1% integer
    rect.
    LPnetlib/lpi_gosh LPnetlib/
    lpi_gosh
    536 MAT,
    MM,
    RB
    3,792 13,455 3,790 3,790 9,665 0.9995 ? 1.7e+011 0.2% real
    rect.
    LPnetlib/lpi_gran LPnetlib/
    lpi_gran
    391 MAT,
    MM,
    RB
    2,658 2,525 2,311 1,938 587 0.7675 ? 1.3e+002 0.3% real
    rect.
    LPnetlib/lpi_greenbea LPnetlib/
    lpi_greenbea
    372 MAT,
    MM,
    RB
    2,393 5,596 2,390 2,390 3,206 0.9987 ? 3.6e+013 0.23% real
    rect.
    LPnetlib/lpi_mondou2 LPnetlib/
    lpi_mondou2
    273 MAT,
    MM,
    RB
    312 604 312 311 293 0.9968 ? 1.3e+014 0.64% integer
    rect.

    Maintained by Leslie Foster, last updated 16-Feb-2009.
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