Matrix properties
number of rows	85,567
number of columns	85,567
nonzeros	419,201
structural full rank?	yes
structural rank	85,567
# 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	NASA
editor	G. Kumfert, A. Pothen
date	2003
kind	structural problem
2D/3D problem?	yes

Additional fields	size and type
coord	full 85567-by-3

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	10,520,808	6,188,676
Cholesky flop count	8.4e+09	2.3e+09
nnz(L+U), no partial pivoting	20,956,049	12,291,785
nnz(V) for QR, upper bound nnz(L) for LU	24,346,428	13,700,698
nnz(R) for QR, upper bound nnz(U) for LU	43,546,960	25,407,124

Maintained by Tim Davis, last updated 30-Sep-2008.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.