Matrix properties
number of rows	6,691
number of columns	6,691
nonzeros	46,187
structural full rank?	yes
structural rank	6,691
# 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	symmetric
type	binary
structure	symmetric
Cholesky candidate?	yes
positive definite?	no

author	NASA
editor	G. Kumfert, A. Pothen
date	2003
kind	structural problem
2D/3D problem?	yes

Additional fields	size and type
coord	full 6691-by-2

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	109,795	119,030
Cholesky flop count	4.0e+06	4.4e+06
nnz(L+U), no partial pivoting	212,899	231,369
nnz(V) for QR, upper bound nnz(L) for LU	221,114	219,049
nnz(R) for QR, upper bound nnz(U) for LU	421,525	418,162

Maintained by Tim Davis, last updated 30-Sep-2008.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.