Matrix properties
number of rows	153
number of columns	153
nonzeros	2,423
structural full rank?	yes
structural rank	153
# 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	J. Lewis
editor	I. Duff, R. Grimes, J. Lewis
date	1982
kind	structural problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	2,326	2,804
Cholesky flop count	3.9e+04	6.1e+04
nnz(L+U), no partial pivoting	4,499	5,455
nnz(V) for QR, upper bound nnz(L) for LU	2,496	3,476
nnz(R) for QR, upper bound nnz(U) for LU	4,303	5,744

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.