Matrix properties
number of rows	300
number of columns	300
nonzeros	3,155
structural full rank?	yes
structural rank	300
# of blocks from dmperm	31
# strongly connected comp.	31
explicit zero entries	0
nonzero pattern symmetry	47%
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 300-by-1

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	4,913
Cholesky flop count	1.2e+05
nnz(L+U), no partial pivoting, with AMD	9,526
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	4,900
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	9,938

SVD-based statistics:
norm(A)	2.34938
min(svd(A))	2.77494e-06
cond(A)	846644
rank(A)	300
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.