Matrix properties
number of rows	17,361
number of columns	17,361
nonzeros	1,021,159
structural full rank?	yes
structural rank	17,361
# 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	D. Billger
editor	E. Rudnyi
date	2004
kind	duplicate model reduction problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	1,232,355	1,530,519
Cholesky flop count	1.2e+08	2.0e+08
nnz(L+U), no partial pivoting	2,447,349	3,043,677
nnz(V) for QR, upper bound nnz(L) for LU	3,282,796	2,793,288
nnz(R) for QR, upper bound nnz(U) for LU	10,285,290	6,831,603

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.