Matrix properties
number of rows	62
number of columns	62
nonzeros	450
structural full rank?	yes
structural rank	62
# of blocks from dmperm	2
# strongly connected comp.	2
entries not in dmperm blocks	8
explicit zero entries	0
nonzero pattern symmetry	97%
numeric value symmetry	81%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	B. Schultz, S. Gedney
editor	Z. Bai, D. Day, J. Demmel, J. Dongarra
date	1994
kind	electromagnetics problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	327	339	317
Cholesky flop count	1.9e+03	2.0e+03	1.8e+03
nnz(L+U), no partial pivoting	592	616	580
nnz(V) for QR, upper bound nnz(L) for LU	441	415	452
nnz(R) for QR, upper bound nnz(U) for LU	743	733	681

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.