Matrix properties
number of rows	62,064
number of columns	62,064
nonzeros	4,248,286
structural full rank?	yes
structural rank	62,064
# 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	binary
structure	symmetric
Cholesky candidate?	yes
positive definite?	no

author	A. Gupta
editor	T. Davis
date	1996
kind	optimization problem
2D/3D problem?	no

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	6,058,259	5,765,031
Cholesky flop count	1.6e+09	1.7e+09
nnz(L+U), no partial pivoting	12,054,454	11,467,998
nnz(V) for QR, upper bound nnz(L) for LU	406,813,222	-
nnz(R) for QR, upper bound nnz(U) for LU	870,474,510	-

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.