GHS_indef/helm3d01
Helmholtz eq. on a unit cube: -div grad u -10000 u = 1, B.C. u = 0
| Name |
helm3d01 |
| Group |
GHS_indef |
| Matrix ID |
1237 |
|
Num Rows
|
32,226 |
|
Num Cols
|
32,226 |
|
Nonzeros
|
428,444 |
|
Pattern Entries
|
428,444 |
|
Kind
|
2D/3D Problem |
|
Symmetric
|
Yes |
|
Date
|
2004 |
|
Author
|
|
|
Editor
|
N. Gould, Y. Hu, J. Scott |
| Structural Rank |
32,226 |
| Structural Rank Full |
true |
|
Num Dmperm Blocks
|
1 |
|
Strongly Connect Components
|
1 |
|
Num Explicit Zeros
|
0 |
|
Pattern Symmetry
|
100% |
|
Numeric Symmetry
|
100% |
|
Cholesky Candidate
|
no |
|
Positive Definite
|
no |
|
Type
|
real |
| SVD Statistics |
| Matrix Norm |
5.052177e-01 |
| Minimum Singular Value |
2.060517e-06 |
| Condition Number |
2.451897e+05
|
| Rank |
32,226 |
| sprank(A)-rank(A) |
0 |
| Null Space Dimension |
0 |
| Full Numerical Rank? |
yes |
| Download Singular Values |
MATLAB
|
