GHS_indef/aug2d

Gould, Hu, & Scott: expanded system-2D PDE (CUTEr)
Name aug2d
Group GHS_indef
Matrix ID 1215
Num Rows 29,008
Num Cols 29,008
Nonzeros 76,832
Pattern Entries 76,832
Kind 2D/3D Problem
Symmetric Yes
Date 1994
Author N. Gould
Editor N. Gould
Structural Rank 19,208
Structural Rank Full false
Num Dmperm Blocks 2
Strongly Connect Components 1
Num Explicit Zeros 0
Pattern Symmetry 100%
Numeric Symmetry 100%
Cholesky Candidate no
Positive Definite no
Type integer
SVD Statistics
Matrix Norm 2.828071e+00
Minimum Singular Value 6.825798e-40
Condition Number 4.143210e+39
Rank 19,208
sprank(A)-rank(A) 0
Null Space Dimension 9,800
Full Numerical Rank? no
Download Singular Values MATLAB