Matrix properties
number of rows	16,783
number of columns	16,783
nonzeros	9,323,427
structural full rank?	yes
structural rank	16,783
# 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	A. Gupta
editor	T. Davis
date	1996
kind	optimization problem
2D/3D problem?	no

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	5,448,835	9,794,634
Cholesky flop count	2.2e+09	5.9e+09
nnz(L+U), no partial pivoting	10,880,887	19,572,485
nnz(V) for QR, upper bound nnz(L) for LU	35,581,021	21,363,592
nnz(R) for QR, upper bound nnz(U) for LU	139,526,072	140,829,703

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.