Matrix properties
number of rows	29,067
number of columns	29,067
nonzeros	2,081,063
structural full rank?	yes
structural rank	29,067
# 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 29067-by-1

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	7,184,217
Cholesky flop count	3.5e+09
nnz(L+U), no partial pivoting, with AMD	14,339,367
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	14,043,866
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	36,017,823

SVD-based statistics:
norm(A)	79934.6
min(svd(A))	0.00220106
cond(A)	3.63164e+07
rank(A)	29,067
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.