Matrix properties
number of rows	2,910
number of columns	2,910
nonzeros	174,296
structural full rank?	yes
structural rank	2,910
# 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	real
structure	symmetric
Cholesky candidate?	yes
positive definite?	yes

author	NASA
editor	G. Kumfert, A. Pothen
date	1995
kind	structural problem
2D/3D problem?	yes

Additional fields	size and type
b	full 2910-by-1

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	202,288	223,333
Cholesky flop count	2.1e+07	2.4e+07
nnz(L+U), no partial pivoting	401,666	443,756
nnz(V) for QR, upper bound nnz(L) for LU	401,991	391,865
nnz(R) for QR, upper bound nnz(U) for LU	1,098,730	968,255

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.