Matrix properties
number of rows	2,880
number of columns	2,880
nonzeros	18,229
structural full rank?	yes
structural rank	2,880
# of blocks from dmperm	177
# strongly connected comp.	107
entries not in dmperm blocks	774
explicit zero entries	1,406
nonzero pattern symmetry	7%
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

Additional fields	size and type
b	full 2880-by-1
x	full 2880-by-1

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	157,432	141,217	141,963
Cholesky flop count	3.2e+07	2.1e+07	2.2e+07
nnz(L+U), no partial pivoting	311,984	279,554	281,820
nnz(V) for QR, upper bound nnz(L) for LU	155,210	122,814	124,062
nnz(R) for QR, upper bound nnz(U) for LU	278,820	236,271	232,783

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 1406 explicit zero entries.

Maintained by Tim Davis, last updated 30-Sep-2008.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.