Matrix properties
number of rows	18,892
number of columns	18,892
nonzeros	497,844
structural full rank?	yes
structural rank	18,892
# 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'))	364,975	478,053
Cholesky flop count	1.3e+07	2.8e+07
nnz(L+U), no partial pivoting	711,058	937,214
nnz(V) for QR, upper bound nnz(L) for LU	619,679	652,476
nnz(R) for QR, upper bound nnz(U) for LU	1,441,462	2,577,795

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.