HB/nnc261
U NATIONAL NUCLEAR CORP. FISSION REACTOR SIESMIC STUDIES
| Name | nnc261 | 
| Group | HB | 
| Matrix ID | 215 | 
| Num Rows | 261 | 
| Num Cols | 261 | 
| Nonzeros | 1,500 | 
| Pattern Entries | 1,500 | 
| Kind | 2D/3D Problem | 
| Symmetric | No | 
| Date | 1982 | 
| Author | National Nuclear Corp. | 
| Editor | I. Duff, R. Grimes, J. Lewis | 
 
 
| Structural Rank | 261 | 
| Structural Rank Full | true | 
| Num Dmperm Blocks | 29 | 
| Strongly Connect Components | 1 | 
| Num Explicit Zeros | 0 | 
| Pattern Symmetry | 82.4% | 
| Numeric Symmetry | 61.3% | 
| Cholesky Candidate | no | 
| Positive Definite | no | 
| Type | real | 
 
| SVD Statistics | 
| Matrix Norm | 1.040628e+03 | 
| Minimum Singular Value | 3.573898e-12 | 
| Condition Number | 2.911744e+14 | 
| Rank | 260 | 
| sprank(A)-rank(A) | 1 | 
| Null Space Dimension | 1 | 
| Full Numerical Rank? | no | 
| Download Singular Values | MATLAB |