Matrix properties
number of rows	6,774
number of columns	6,774
nonzeros	33,744
structural full rank?	yes
structural rank	6,774
# of blocks from dmperm	1,311
# strongly connected comp.	1,291
entries not in dmperm blocks	4,910
explicit zero entries	4,948
nonzero pattern symmetry	0%
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	P. Hollinger
editor	T. Davis
date	2001
kind	economic problem
2D/3D problem?	no

Additional fields	size and type
b	full 6774-by-1
x	full 6774-by-1

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	198,431	210,705	190,525
Cholesky flop count	3.7e+07	3.7e+07	4.0e+07
nnz(L+U), no partial pivoting	390,088	414,636	379,186
nnz(V) for QR, upper bound nnz(L) for LU	233,673	173,305	154,821
nnz(R) for QR, upper bound nnz(U) for LU	603,053	499,512	426,136

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 4948 explicit zero entries.

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.