Matrix properties
number of rows	16,782
number of columns	16,782
nonzeros	678,998
structural full rank?	yes
structural rank	16,782
# 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. Andrianov
editor	T. Davis
date	2006
kind	optimization problem
2D/3D problem?	no

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	26,433,573	7,773,777
Cholesky flop count	8.2e+10	7.5e+09
nnz(L+U), no partial pivoting	52,850,364	15,530,772
nnz(V) for QR, upper bound nnz(L) for LU	56,342,358	20,771,852
nnz(R) for QR, upper bound nnz(U) for LU	83,494,245	49,748,530

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.