Matrix properties
number of rows	16,428
number of columns	16,428
nonzeros	63,406
structural full rank?	yes
structural rank	16,428
# of blocks from dmperm	1,061
# strongly connected comp.	1
explicit zero entries	0
nonzero pattern symmetry	0%
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	M. Hohn
editor	T. Davis
date	2003
kind	materials problem
2D/3D problem?	yes

Additional fields	size and type
b	full 16428-by-1

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	8,300,663
Cholesky flop count	1.5e+10
nnz(L+U), no partial pivoting, with AMD	16,584,898
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	766,230
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	1,452,963

SVD-based statistics:
norm(A)	5.44158e+08
min(svd(A))	0.00836892
cond(A)	6.50213e+10
rank(A)	16,428
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:	SVD did not converge.

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.