Matrix properties
number of rows	30,004
number of columns	30,004
nonzeros	150,009
structural full rank?	yes
structural rank	30,004
# 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?	no

author	J. Blowey
editor	N. Gould
date	1992
kind	materials problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	110,009	130,687
Cholesky flop count	4.1e+05	6.2e+05
nnz(L+U), no partial pivoting	190,014	231,370
nnz(V) for QR, upper bound nnz(L) for LU	18,923,955	-
nnz(R) for QR, upper bound nnz(U) for LU	50,430,417	-

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.