Matrix properties
number of rows	15,575
number of columns	15,575
nonzeros	33,033
structural full rank?	yes
structural rank	15,575
# of blocks from dmperm	15,466
# strongly connected comp.	15,466
entries not in dmperm blocks	17,261
explicit zero entries	41
nonzero pattern symmetry	0%
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

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	36,160	40,644	15,836
Cholesky flop count	1.6e+05	4.3e+05	1.7e+04
nnz(L+U), no partial pivoting	56,745	65,713	33,358
nnz(V) for QR, upper bound nnz(L) for LU	59,302	49,832	15,958
nnz(R) for QR, upper bound nnz(U) for LU	717,364	697,576	33,600

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 41 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.