Matrix properties
number of rows	35,550
number of columns	35,550
nonzeros	412,306
structural full rank?	yes
structural rank	35,550
# of blocks from dmperm	1,717
# strongly connected comp.	877
entries not in dmperm blocks	5,395
explicit zero entries	62,990
nonzero pattern symmetry	3%
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'))	9,692,479	8,711,855	8,644,959
Cholesky flop count	1.2e+10	7.8e+09	7.6e+09
nnz(L+U), no partial pivoting	19,349,408	17,388,160	17,259,763
nnz(V) for QR, upper bound nnz(L) for LU	13,516,699	5,963,158	6,910,286
nnz(R) for QR, upper bound nnz(U) for LU	23,901,708	15,592,752	16,019,839

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 62990 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.