Matrix properties
number of rows	37,376
number of columns	37,376
nonzeros	298,496
structural full rank?	yes
structural rank	37,376
# 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. Berger, J. Mulvey, E. Rothberg, R. Vanderbei
editor	N. Gould, Y. Hu, J. Scott
date	1997
kind	optimization problem
2D/3D problem?	no

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	1,704,398	866,316
Cholesky flop count	6.2e+08	6.7e+07
nnz(L+U), no partial pivoting	3,371,420	1,695,256
nnz(V) for QR, upper bound nnz(L) for LU	3,628,213	3,243,843
nnz(R) for QR, upper bound nnz(U) for LU	7,857,994	7,662,366

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.