Matrix properties
number of rows	9,520
number of columns	9,520
nonzeros	401,200
structural full rank?	yes
structural rank	9,520
# of blocks from dmperm	2
# strongly connected comp.	2
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. Andrianov
editor	T. Davis
date	2006
kind	optimization problem
2D/3D problem?	no

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	1,500,131	1,640,503	1,500,131
Cholesky flop count	6.5e+08	7.8e+08	6.5e+08
nnz(L+U), no partial pivoting	2,990,742	3,271,486	2,990,742
nnz(V) for QR, upper bound nnz(L) for LU	12,248,007	7,995,058	8,655,303
nnz(R) for QR, upper bound nnz(U) for LU	18,725,968	16,937,785	17,989,520

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.