Matrix properties
number of rows	17,077
number of columns	17,077
nonzeros	875,923
structural full rank?	yes
structural rank	17,077
# of blocks from dmperm	1
# strongly connected comp.	1
entries not in dmperm blocks	0
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	real
structure	symmetric
Cholesky candidate?	yes
positive definite?	no

author	Y. Zhou, Y. Saad, M. Tiago, J. Chelikowsky
editor	T. Davis
date	2005
kind	theoretical/quantum chemistry problem
2D/3D problem?	no

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	56,103,003	27,692,660
Cholesky flop count	2.8e+11	6.9e+10
nnz(L+U), no partial pivoting	112,188,929	55,368,243
nnz(V) for QR, upper bound nnz(L) for LU	64,109,715	45,218,527
nnz(R) for QR, upper bound nnz(U) for LU	95,956,598	78,409,274

Maintained by Tim Davis, last updated 04-May-2008.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.