HB/gr_30_30
SYMMETRIC MATRIX FROM NINE POINT START ON A 30 X 30 GRID.
| Name |
gr_30_30 |
| Group |
HB |
| Matrix ID |
159 |
|
Num Rows
|
900 |
|
Num Cols
|
900 |
|
Nonzeros
|
7,744 |
|
Pattern Entries
|
7,744 |
|
Kind
|
2D/3D Problem |
|
Symmetric
|
Yes |
|
Date
|
1983 |
|
Author
|
R. Grimes |
|
Editor
|
I. Duff, R. Grimes, J. Lewis |
| Structural Rank |
900 |
| Structural Rank Full |
true |
|
Num Dmperm Blocks
|
1 |
|
Strongly Connect Components
|
1 |
|
Num Explicit Zeros
|
0 |
|
Pattern Symmetry
|
100% |
|
Numeric Symmetry
|
100% |
|
Cholesky Candidate
|
yes |
|
Positive Definite
|
yes |
|
Type
|
integer |
| SVD Statistics |
| Matrix Norm |
1.195906e+01 |
| Minimum Singular Value |
6.146282e-02 |
| Condition Number |
1.945739e+02
|
| Rank |
900 |
| sprank(A)-rank(A) |
0 |
| Null Space Dimension |
0 |
| Full Numerical Rank? |
yes |
| Download Singular Values |
MATLAB
|
