Matrix properties
number of rows	14,760
number of columns	14,760
nonzeros	145,157
structural full rank?	yes
structural rank	14,760
# of blocks from dmperm	737
# strongly connected comp.	387
explicit zero entries	12,833
nonzero pattern symmetry	4%
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:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	2,788,451
Cholesky flop count	2.4e+09
nnz(L+U), no partial pivoting, with AMD	5,562,142
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	2,898,238
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	5,399,522

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 12833 explicit zero entries.

SVD-based statistics:
norm(A)	79999.9
min(svd(A))	8.55193e-09
cond(A)	9.35461e+12
rank(A)	14,754
sprank(A)-rank(A)	6
null space dimension	6
full numerical rank?	no
singular value gap	5.15442

singular values (MAT file):	click here
SVD method used:	s = svd (full (A)) ;
status:	ok

For a description of the statistics displayed above, click here.

Maintained by Tim Davis, last updated 12-Mar-2014.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.