Matrix properties
number of rows	16,955
number of columns	16,955
nonzeros	37,849
structural full rank?	yes
structural rank	16,955
# of blocks from dmperm	16,794
# strongly connected comp.	16,794
explicit zero entries	0
nonzero pattern symmetry	1%
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	F. Grund
editor	T. Davis
date	2010
kind	economic problem
2D/3D problem?	no

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	61,241
Cholesky flop count	2.4e+06
nnz(L+U), no partial pivoting, with AMD	105,527
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	136,094
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	649,549

SVD-based statistics:
norm(A)	15.9918
min(svd(A))	0.0304433
cond(A)	525.298
rank(A)	16,955
sprank(A)-rank(A)	0
null space dimension	0
full numerical rank?	yes

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.