Andrianov/pattern1
pattern1 matrix from Alexander Andrianov, SAS Institute Inc.
| Name | pattern1 | 
| Group | Andrianov | 
| Matrix ID | 1393 | 
| Num Rows | 19,242 | 
| Num Cols | 19,242 | 
| Nonzeros | 9,323,432 | 
| Pattern Entries | 9,323,432 | 
| Kind | Optimization Problem | 
| Symmetric | Yes | 
| Date | 2006 | 
| Author | A. Andrianov | 
| Editor | T. Davis | 
 
 
| Structural Rank | 19,242 | 
| 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 | binary | 
 
| SVD Statistics | 
| Matrix Norm | 7.708143e+02 | 
| Minimum Singular Value | 3.011612e-82 | 
| Condition Number | 2.559475e+84 | 
| Rank | 11,293 | 
| sprank(A)-rank(A) | 7,949 | 
| Null Space Dimension | 7,949 | 
| Full Numerical Rank? | no | 
| Download Singular Values | MATLAB |