Matrix properties
number of rows	782
number of columns	782
nonzeros	5,982
structural full rank?	yes
structural rank	782
# 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'))	10,052	11,378	9,951
Cholesky flop count	1.7e+05	2.3e+05	1.6e+05
nnz(L+U), no partial pivoting	19,322	21,974	19,120
nnz(V) for QR, upper bound nnz(L) for LU	13,066	17,048	15,239
nnz(R) for QR, upper bound nnz(U) for LU	28,419	34,130	29,541

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.