Matrix: Gset/G13
Description: 2D torus, 32-by-25, uniformly random +1/-1 entries
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| (undirected graph drawing) |
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| Matrix properties | |
| number of rows | 800 |
| number of columns | 800 |
| nonzeros | 3,200 |
| # strongly connected comp. | 1 |
| explicit zero entries | 0 |
| nonzero pattern symmetry | symmetric |
| numeric value symmetry | symmetric |
| type | integer |
| structure | symmetric |
| Cholesky candidate? | no |
| positive definite? | no |
| author | C. Helmberg |
| editor | Y. Ye |
| date | 1996 |
| kind | undirected weighted random graph |
| 2D/3D problem? | no |
| SVD-based statistics: | |
| norm(A) | 3.55523 |
| min(svd(A)) | 0.000510735 |
| cond(A) | 6961.01 |
| rank(A) | 800 |
| null space dimension | 0 |
| full numerical rank? | yes |
| singular values (MAT file): | click here |
| SVD method used: | s = svd (full (A)) ; |
| status: | ok |
For a description of the statistics displayed above, click here.
Maintained by Tim Davis, last updated 12-Mar-2014.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.