Matrix properties
number of rows	65,025
number of columns	65,025
nonzeros	1,030,225
structural full rank?	yes
structural rank	65,025
# of blocks from dmperm	1
# strongly connected comp.	1
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	real
structure	symmetric
Cholesky candidate?	yes
positive definite?	yes

author	L. Dubcova, J. Cerveny, and P. Solin
editor	T. Davis
date	2007
kind	2D/3D problem
2D/3D problem?	yes

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	2,956,869
Cholesky flop count	4.7e+08
nnz(L+U), no partial pivoting, with AMD	5,848,713
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	7,876,401
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	20,290,483

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.