Matrix properties
number of rows	16,129
number of columns	16,129
nonzeros	253,009
structural full rank?	yes
structural rank	16,129
# of blocks from dmperm	1
# strongly connected comp.	1
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	real
structure	symmetric
Cholesky candidate?	yes
positive definite?	yes

author	L. Dubcova, J. Cerveny, and P. Solin
editor	T. Davis
date	2007
kind	2D/3D problem
2D/3D problem?	yes

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	576,080
Cholesky flop count	5.0e+07
nnz(L+U), no partial pivoting, with AMD	1,136,031
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	1,255,893
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	3,308,580

SVD-based statistics:
norm(A)	4.79633
min(svd(A))	0.00481018
cond(A)	997.12
rank(A)	16,129
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.