HB/jgl011
U JOHN G. LEWIS P4 COUNTEREXAMPLE WHICH REQUIRES FILL IN SPIKES
| Name |
jgl011 |
| Group |
HB |
| Matrix ID |
186 |
|
Num Rows
|
11 |
|
Num Cols
|
11 |
|
Nonzeros
|
76 |
|
Pattern Entries
|
76 |
|
Kind
|
Counter Example Problem |
|
Symmetric
|
No |
|
Date
|
1983 |
|
Author
|
J. Lewis |
|
Editor
|
I. Duff, R. Grimes, J. Lewis |
| Structural Rank |
11 |
| Structural Rank Full |
true |
|
Num Dmperm Blocks
|
1 |
|
Strongly Connect Components
|
1 |
|
Num Explicit Zeros
|
0 |
|
Pattern Symmetry
|
51.5% |
|
Numeric Symmetry
|
51.5% |
|
Cholesky Candidate
|
no |
|
Positive Definite
|
no |
|
Type
|
binary |
| SVD Statistics |
| Matrix Norm |
7.694946e+00 |
| Minimum Singular Value |
0 |
| Condition Number |
Inf
|
| Rank |
5 |
| sprank(A)-rank(A) |
6 |
| Null Space Dimension |
6 |
| Full Numerical Rank? |
no |
| Download Singular Values |
MATLAB
|
