Matrix properties
number of rows	441
number of columns	441
nonzeros	26,839
structural full rank?	yes
structural rank	441
# 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?	no
positive definite?	no

author	A. Baggag, Y. Saad
editor	A. Baggag, Y. Saad
date	1994
kind	computational fluid dynamics problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	18,386	19,386
Cholesky flop count	8.5e+05	9.8e+05
nnz(L+U), no partial pivoting	36,331	38,331
nnz(V) for QR, upper bound nnz(L) for LU	22,546	29,612
nnz(R) for QR, upper bound nnz(U) for LU	50,552	58,422

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.