Matrix properties
number of rows	62
number of columns	62
nonzeros	342
structural full rank?	yes
structural rank	62
# of blocks from dmperm	2
# strongly connected comp.	2
entries not in dmperm blocks	0
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	real
structure	symmetric
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'))	288	300	288
Cholesky flop count	1.5e+03	1.6e+03	1.5e+03
nnz(L+U), no partial pivoting	514	538	514
nnz(V) for QR, upper bound nnz(L) for LU	321	410	380
nnz(R) for QR, upper bound nnz(U) for LU	589	602	594

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.