Matrix properties
number of rows	4,008
number of columns	4,008
nonzeros	8,188
structural full rank?	yes
structural rank	4,008
# of blocks from dmperm	3,943
# strongly connected comp.	3,943
entries not in dmperm blocks	4,115
explicit zero entries	0
nonzero pattern symmetry	3%
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	F. Grund
editor	F. Grund
date	1997
kind	economic problem
2D/3D problem?	no

Additional fields	size and type
b	full 4008-by-1

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	8,584	9,049	4,035
Cholesky flop count	2.1e+04	2.9e+04	4.2e+03
nnz(L+U), no partial pivoting	13,160	14,090	8,177
nnz(V) for QR, upper bound nnz(L) for LU	6,525	7,266	4,071
nnz(R) for QR, upper bound nnz(U) for LU	35,756	35,131	8,195

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.