• SJSU Singular Matrix Database

    SJSU Singular Matrix Database: Pothen group.

  • Click here for a description of the Pothen 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
    Pothen/pwt Pothen/
    pwt
    463 MAT,
    MM,
    RB
    36,519 36,519 36,519 35,475 1,044 0.9714 Inf 8.7e+008 0.024% binary
    sym.
    Pothen/shuttle_eddy Pothen/
    shuttle_eddy
    362 MAT,
    MM,
    RB
    10,429 10,429 10,429 9,757 672 0.9356 Inf 4e+013 0.095% binary
    sym.
    Pothen/skirt Pothen/
    skirt
    394 MAT,
    MM,
    RB
    12,598 12,598 12,598 9,831 2,767 0.7804 Inf 2.1e+009 0.12% binary
    sym.
    Pothen/sphere2 Pothen/
    sphere2
    218 MAT,
    MM,
    RB
    66 66 66 64 2 0.9697 5.6e+016 2e+014 10% binary
    sym.
    Pothen/sphere3 Pothen/
    sphere3
    219 MAT,
    MM,
    RB
    258 258 258 253 5 0.9806 1.4e+018 1e+014 3% binary
    sym.

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