Matrix properties
number of rows	8,032
number of columns	8,032
nonzeros	355,460
structural full rank?	yes
structural rank	8,032
# 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	R. Grimes
editor	T. Davis
date	1995
kind	structural problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	736,620	832,526
Cholesky flop count	1.2e+08	1.4e+08
nnz(L+U), no partial pivoting	1,465,208	1,657,020
nnz(V) for QR, upper bound nnz(L) for LU	1,467,968	1,473,275
nnz(R) for QR, upper bound nnz(U) for LU	3,072,801	2,979,038

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.