Matrix properties
number of rows	112
number of columns	112
nonzeros	640
structural full rank?	yes
structural rank	112
# 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	J. Lewis
editor	I. Duff, R. Grimes, J. Lewis
date	1982
kind	structural problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	384	514	384
Cholesky flop count	1.4e+03	2.5e+03	1.4e+03
nnz(L+U), no partial pivoting	656	916	656
nnz(V) for QR, upper bound nnz(L) for LU	388	492	384
nnz(R) for QR, upper bound nnz(U) for LU	596	760	592

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.