Matrix properties
number of rows	74,752
number of columns	74,752
nonzeros	596,992
structural full rank?	yes
structural rank	74,752
# 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	A. Berger, J. Mulvey, E. Rothberg, R. Vanderbei
editor	E. Rothberg
date	1997
kind	economic problem
2D/3D problem?	no

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	2,837,714	1,794,080
Cholesky flop count	6.3e+08	1.5e+08
nnz(L+U), no partial pivoting	5,600,676	3,513,408
nnz(V) for QR, upper bound nnz(L) for LU	7,132,462	6,680,096
nnz(R) for QR, upper bound nnz(U) for LU	15,382,253	15,578,620

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.