Matrix properties
number of rows	216
number of columns	216
nonzeros	4,317
structural full rank?	yes
structural rank	216
# of blocks from dmperm	1
# strongly connected comp.	1
entries not in dmperm blocks	0
explicit zero entries	35
nonzero pattern symmetry	symmetric
numeric value symmetry	100%
type	real
structure	unsymmetric
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'))	4,284	4,512
Cholesky flop count	1.0e+05	1.2e+05
nnz(L+U), no partial pivoting	8,352	8,808
nnz(V) for QR, upper bound nnz(L) for LU	6,831	6,920
nnz(R) for QR, upper bound nnz(U) for LU	15,197	13,727

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 35 explicit zero entries.

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.