HB/str_0
UNSYMMETRIC BASIS FROM LP PROBLEM STAIR
| Name | 
str_0 | 
| Group | 
HB | 
| Matrix ID | 
254 | 
| 
Num Rows
 | 
363 | 
| 
Num Cols
 | 
363 | 
| 
Nonzeros
 | 
2,454 | 
| 
Pattern Entries
 | 
2,454 | 
| 
Kind
 | 
Optimization Problem Sequence | 
| 
Symmetric
 | 
No | 
| 
Date
 | 
1978 | 
| 
Author
 | 
M. Saunders | 
| 
Editor
 | 
A. Curtis, I. Duff, J. Reid | 
 
 
| Structural Rank | 
363 | 
| Structural Rank Full | 
true | 
| 
Num Dmperm Blocks
 | 
363 | 
| 
Strongly Connect Components
 | 
2 | 
| 
Num Explicit Zeros
 | 
0 | 
| 
Pattern Symmetry
 | 
0.5% | 
| 
Numeric Symmetry
 | 
0% | 
| 
Cholesky Candidate
 | 
no | 
| 
Positive Definite
 | 
no | 
| 
Type
 | 
real | 
 
| SVD Statistics | 
| Matrix Norm | 
1.393763e+01 | 
| Minimum Singular Value | 
5.085615e-02 | 
| Condition Number | 
2.740599e+02
 | 
| Rank | 
363 | 
| sprank(A)-rank(A) | 
0 | 
| Null Space Dimension | 
0 | 
| Full Numerical Rank? | 
yes | 
| Download Singular Values | 
MATLAB
 |