Matrix properties
number of rows	59,310
number of columns	59,310
nonzeros	717,620
structural full rank?	yes
structural rank	59,310
# of blocks from dmperm	2,837
# strongly connected comp.	1,437
entries not in dmperm blocks	8,754
explicit zero entries	120,316
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'))	18,576,357	16,734,561	16,579,099
Cholesky flop count	2.6e+10	1.7e+10	1.7e+10
nnz(L+U), no partial pivoting	37,093,404	33,409,812	33,107,642
nnz(V) for QR, upper bound nnz(L) for LU	21,836,207	10,982,191	10,719,178
nnz(R) for QR, upper bound nnz(U) for LU	43,454,619	31,013,575	30,816,661

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 120316 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.