Matrix properties
number of rows	11,790
number of columns	11,790
nonzeros	107,383
structural full rank?	yes
structural rank	11,790
# of blocks from dmperm	597
# strongly connected comp.	317
entries not in dmperm blocks	2,033
explicit zero entries	7,288
nonzero pattern symmetry	5%
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

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	1,749,473	1,607,009	1,643,243
Cholesky flop count	1.1e+09	7.8e+08	8.1e+08
nnz(L+U), no partial pivoting	3,487,156	3,202,228	3,276,729
nnz(V) for QR, upper bound nnz(L) for LU	2,039,151	1,290,479	1,215,933
nnz(R) for QR, upper bound nnz(U) for LU	3,614,040	2,564,540	2,686,087

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 7288 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.