HB/jgl009
U JOHN G. LEWIS P4 COUNTEREXAMPLE WHICH REQUIRES FILL IN SPIKES
| Name |
jgl009 |
| Group |
HB |
| Matrix ID |
185 |
|
Num Rows
|
9 |
|
Num Cols
|
9 |
|
Nonzeros
|
50 |
|
Pattern Entries
|
50 |
|
Kind
|
Counter Example Problem |
|
Symmetric
|
No |
|
Date
|
1983 |
|
Author
|
J. Lewis |
|
Editor
|
I. Duff, R. Grimes, J. Lewis |
| Structural Rank |
9 |
| Structural Rank Full |
true |
|
Num Dmperm Blocks
|
1 |
|
Strongly Connect Components
|
1 |
|
Num Explicit Zeros
|
0 |
|
Pattern Symmetry
|
47.6% |
|
Numeric Symmetry
|
47.6% |
|
Cholesky Candidate
|
no |
|
Positive Definite
|
no |
|
Type
|
binary |
| SVD Statistics |
| Matrix Norm |
6.101288e+00 |
| Minimum Singular Value |
4.861731e-63 |
| Condition Number |
1.254962e+63
|
| Rank |
5 |
| sprank(A)-rank(A) |
4 |
| Null Space Dimension |
4 |
| Full Numerical Rank? |
no |
| Download Singular Values |
MATLAB
|
