HB/bcsstm27
MASS MATRIX BUCKLING PROBLEM (ANDY MERA)
| Name |
bcsstm27 |
| Group |
HB |
| Matrix ID |
77 |
|
Num Rows
|
1,224 |
|
Num Cols
|
1,224 |
|
Nonzeros
|
56,126 |
|
Pattern Entries
|
56,126 |
|
Kind
|
Structural Problem |
|
Symmetric
|
Yes |
|
Date
|
1984 |
|
Author
|
A. Mera, R. Cigel, J. Lewis |
|
Editor
|
I. Duff, R. Grimes, J. Lewis |
| Structural Rank |
1,224 |
| 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
|
no |
|
Type
|
real |
| SVD Statistics |
| Matrix Norm |
3.927163e+03 |
| Minimum Singular Value |
5.677107e-07 |
| Condition Number |
6.917543e+09
|
| Rank |
1,224 |
| sprank(A)-rank(A) |
0 |
| Null Space Dimension |
0 |
| Full Numerical Rank? |
yes |
| Download Singular Values |
MATLAB
|
