Matrix properties
number of rows	80,595
number of columns	80,595
nonzeros	438,795
structural full rank?	yes
structural rank	80,595
# 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?	no

author	I. Maros, C. Meszaros
editor	N. Gould
date	2004
kind	optimization problem
2D/3D problem?	no

Additional fields	size and type
b	full 80595-by-1

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	3,659,115	3,752,237
Cholesky flop count	8.3e+08	7.9e+08
nnz(L+U), no partial pivoting	7,237,635	7,423,879
nnz(V) for QR, upper bound nnz(L) for LU	9,511,183	6,820,818
nnz(R) for QR, upper bound nnz(U) for LU	17,345,724	12,648,112

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.