Matrix properties
number of rows	961
number of columns	961
nonzeros	10,591
structural full rank?	yes
structural rank	961
# of blocks from dmperm	1
# strongly connected comp.	1
entries not in dmperm blocks	0
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	35%
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'))	17,780	18,473
Cholesky flop count	4.6e+05	4.9e+05
nnz(L+U), no partial pivoting	34,599	35,985
nnz(V) for QR, upper bound nnz(L) for LU	22,833	30,387
nnz(R) for QR, upper bound nnz(U) for LU	59,353	74,948

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.