Matrix properties
number of rows	61,349
number of columns	61,349
nonzeros	5,970,947
structural full rank?	yes
structural rank	61,349
# 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'))	596,645,077	208,860,010
Cholesky flop count	9.2e+12	1.2e+12
nnz(L+U), no partial pivoting	1,193,228,805	417,658,671
nnz(V) for QR, upper bound nnz(L) for LU	592,407,788	343,813,328
nnz(R) for QR, upper bound nnz(U) for LU	966,731,804	636,047,159

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.