Pothen/pwt
pwt, with coordinates. From NASA, collected by Alex Pothen
| Name |
pwt |
| Group |
Pothen |
| Matrix ID |
880 |
|
Num Rows
|
36,519 |
|
Num Cols
|
36,519 |
|
Nonzeros
|
326,107 |
|
Pattern Entries
|
326,107 |
|
Kind
|
Structural Problem |
|
Symmetric
|
Yes |
|
Date
|
2003 |
|
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
|
