Matrix properties
number of rows	6,245
number of columns	6,245
nonzeros	42,581
structural full rank?	yes
structural rank	6,245
# of blocks from dmperm	6
# strongly connected comp.	6
entries not in dmperm blocks	0
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	integer
structure	symmetric
Cholesky candidate?	yes
positive definite?	no

author	B. Alemdar
editor	T. Davis
date	2003
kind	2D/3D problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	149,205	156,680	148,798
Cholesky flop count	1.0e+07	9.8e+06	8.3e+06
nnz(L+U), no partial pivoting	292,165	307,115	291,351
nnz(V) for QR, upper bound nnz(L) for LU	267,458	258,199	259,378
nnz(R) for QR, upper bound nnz(U) for LU	511,852	495,801	495,924

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.