Matrix properties
number of rows	5,940
number of columns	5,940
nonzeros	83,842
structural full rank?	yes
structural rank	5,940
# of blocks from dmperm	147
# strongly connected comp.	147
explicit zero entries	0
nonzero pattern symmetry	53%
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	Y. Saad
editor	Y. Saad
date	1996
kind	electromagnetics problem
2D/3D problem?	yes

Additional fields	size and type
b	full 5940-by-1

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	331,335
Cholesky flop count	3.3e+07
nnz(L+U), no partial pivoting, with AMD	656,730
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	477,237
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	881,333

SVD-based statistics:
norm(A)	2.51976
min(svd(A))	5.79267e-09
cond(A)	4.34991e+08
rank(A)	5,940
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.