Matrix properties
number of rows	201,822
number of columns	201,822
nonzeros	11,294,316
structural full rank?	yes
structural rank	201,822
# 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	C. Damhaug
editor	N. Gould, Y. Hu, J. Scott
date	2004
kind	structural problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	47,258,256	53,341,365
Cholesky flop count	4.5e+10	5.1e+10
nnz(L+U), no partial pivoting	94,314,690	106,480,908
nnz(V) for QR, upper bound nnz(L) for LU	177,655,683	126,647,832
nnz(R) for QR, upper bound nnz(U) for LU	321,624,876	240,907,314

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.