HB/will199
UNSYMMETRIC PATTERN OF ORDER 199 GIVEN BY WILLOUGHBY IN REID, 1970
Name |
will199 |
Group |
HB |
Matrix ID |
273 |
Num Rows
|
199 |
Num Cols
|
199 |
Nonzeros
|
701 |
Pattern Entries
|
701 |
Kind
|
Structural Problem |
Symmetric
|
No |
Date
|
1979 |
Author
|
R. Willoughby |
Editor
|
I. Duff, R. Grimes, J. Lewis |
Structural Rank |
199 |
Structural Rank Full |
true |
Num Dmperm Blocks
|
10 |
Strongly Connect Components
|
1 |
Num Explicit Zeros
|
0 |
Pattern Symmetry
|
5.6% |
Numeric Symmetry
|
5.6% |
Cholesky Candidate
|
no |
Positive Definite
|
no |
Type
|
binary |
SVD Statistics |
Matrix Norm |
4.388079e+00 |
Minimum Singular Value |
7.399593e-18 |
Condition Number |
5.930163e+17
|
Rank |
191 |
sprank(A)-rank(A) |
8 |
Null Space Dimension |
8 |
Full Numerical Rank? |
no |
Download Singular Values |
MATLAB
|