Matrix properties
number of rows	1,083
number of columns	1,083
nonzeros	18,437
structural full rank?	yes
structural rank	1,083
# 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'))	58,416	47,591
Cholesky flop count	4.5e+06	2.7e+06
nnz(L+U), no partial pivoting	115,749	94,099
nnz(V) for QR, upper bound nnz(L) for LU	53,064	58,049
nnz(R) for QR, upper bound nnz(U) for LU	100,905	107,277

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.