HB/curtis54
UNSYMMETRIC PATTERN OF CURTIS, 1971
| Name |
curtis54 |
| Group |
HB |
| Matrix ID |
109 |
|
Num Rows
|
54 |
|
Num Cols
|
54 |
|
Nonzeros
|
291 |
|
Pattern Entries
|
291 |
|
Kind
|
2D/3D Problem |
|
Symmetric
|
No |
|
Date
|
1971 |
|
Author
|
A. Curtis |
|
Editor
|
A. Curtis, I. Duff, J. Reid |
| Structural Rank |
54 |
| Structural Rank Full |
true |
|
Num Dmperm Blocks
|
1 |
|
Strongly Connect Components
|
1 |
|
Num Explicit Zeros
|
0 |
|
Pattern Symmetry
|
95.4% |
|
Numeric Symmetry
|
95.4% |
|
Cholesky Candidate
|
no |
|
Positive Definite
|
no |
|
Type
|
binary |
| SVD Statistics |
| Matrix Norm |
6.724238e+00 |
| Minimum Singular Value |
1.639960e-17 |
| Condition Number |
4.100246e+17
|
| Rank |
50 |
| sprank(A)-rank(A) |
4 |
| Null Space Dimension |
4 |
| Full Numerical Rank? |
no |
| Download Singular Values |
MATLAB
|
