Matrix properties
number of rows	7,102
number of columns	7,102
nonzeros	170,134
structural full rank?	yes
structural rank	7,102
# of blocks from dmperm	2
# strongly connected comp.	2
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	B. Cheng
editor	T. Davis
date	2006
kind	structural problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	187,090	211,374	187,090
Cholesky flop count	7.5e+06	9.9e+06	7.5e+06
nnz(L+U), no partial pivoting	367,078	415,646	367,078
nnz(V) for QR, upper bound nnz(L) for LU	402,408	431,068	407,546
nnz(R) for QR, upper bound nnz(U) for LU	1,471,728	1,385,072	1,348,862

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.