Matrix properties
number of rows	12,504
number of columns	12,504
nonzeros	874,887
structural full rank?	yes
structural rank	12,504
# of blocks from dmperm	1
# strongly connected comp.	1
explicit zero entries	0
nonzero pattern symmetry	100%
numeric value symmetry	44%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	COMSOL
editor	T. Davis
date	2003
kind	structural problem
2D/3D problem?	yes

Additional fields	size and type
b	full 12504-by-1

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	1,910,625
Cholesky flop count	4.5e+08
nnz(L+U), no partial pivoting, with AMD	3,808,746
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	3,515,861
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	10,528,278

SVD-based statistics:
norm(A)	308788
min(svd(A))	0.00591613
cond(A)	5.21942e+07
rank(A)	12,504
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.