GHS_psdef/pwt
PWT: Nasa matrix, but with a diagonal added to the original matrix
Name |
pwt |
Group |
GHS_psdef |
Matrix ID |
1273 |
Num Rows
|
36,519 |
Num Cols
|
36,519 |
Nonzeros
|
326,107 |
Pattern Entries
|
326,107 |
Kind
|
Duplicate Structural Problem |
Symmetric
|
Yes |
Date
|
1995 |
Author
|
NASA |
Editor
|
G. Kumfert, A. Pothen |
Structural Rank |
36,519 |
Structural Rank Full |
true |
Num Dmperm Blocks
|
57 |
Strongly Connect Components
|
57 |
Num Explicit Zeros
|
0 |
Pattern Symmetry
|
100% |
Numeric Symmetry
|
100% |
Cholesky Candidate
|
yes |
Positive Definite
|
no |
Type
|
binary |
SVD Statistics |
Matrix Norm |
9.905274e+00 |
Minimum Singular Value |
8.724673e-19 |
Condition Number |
1.135318e+19
|
Rank |
35,475 |
sprank(A)-rank(A) |
1,044 |
Null Space Dimension |
1,044 |
Full Numerical Rank? |
no |
Download Singular Values |
MATLAB
|