Matrix properties
number of rows	10,000
number of columns	10,000
nonzeros	49,699
structural full rank?	yes
structural rank	10,000
# of blocks from dmperm	1
# strongly connected comp.	1
entries not in dmperm blocks	0
explicit zero entries	0
nonzero pattern symmetry	100%
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	C. Yang
editor	Z. Bai, D. Day, J. Demmel, J. Dongarra
date	1996
kind	materials problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	204,647	201,171
Cholesky flop count	1.2e+07	1.1e+07
nnz(L+U), no partial pivoting	399,294	392,342
nnz(V) for QR, upper bound nnz(L) for LU	343,315	352,076
nnz(R) for QR, upper bound nnz(U) for LU	627,565	648,518

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.