Matrix properties
number of rows	199,187
number of columns	199,187
nonzeros	11,708,077
structural full rank?	yes
structural rank	199,187
# 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'))	88,820,237	72,959,052
Cholesky flop count	2.3e+11	9.6e+10
nnz(L+U), no partial pivoting	177,441,287	145,718,917
nnz(V) for QR, upper bound nnz(L) for LU	258,729,826	154,039,587
nnz(R) for QR, upper bound nnz(U) for LU	493,039,147	291,115,472

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.