Matrix properties
number of rows	961
number of columns	961
nonzeros	3,405
structural full rank?	no
structural rank	705
# of blocks from dmperm	3
# strongly connected comp.	257
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	36%
type	complex
structure	symmetric
Cholesky candidate?	no
positive definite?	no

author	S. Gedney and U. Navasariwala
editor	Z. Bai, D. Day, J. Demmel, J. Dongarra
date	1996
kind	electromagnetics problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	6,322	6,420
Cholesky flop count	7.5e+04	7.4e+04
nnz(L+U), no partial pivoting	11,683	11,879
nnz(V) for QR, upper bound nnz(L) for LU	9,262	9,938
nnz(R) for QR, upper bound nnz(U) for LU	17,679	19,669

Maintained by Tim Davis, last updated 04-May-2008.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.