Matrix properties
number of rows	15,606
number of columns	15,606
nonzeros	107,362
structural full rank?	yes
structural rank	15,606
# 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 15606-by-2

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	368,416	363,248
Cholesky flop count	1.8e+07	1.6e+07
nnz(L+U), no partial pivoting	721,226	710,890
nnz(V) for QR, upper bound nnz(L) for LU	529,120	544,298
nnz(R) for QR, upper bound nnz(U) for LU	996,860	1,032,658

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.