Matrix properties
number of rows	2,203
number of columns	2,203
nonzeros	67,830
structural full rank?	yes
structural rank	2,203
# of blocks from dmperm	1
# strongly connected comp.	1
entries not in dmperm blocks	0
explicit zero entries	2,151
nonzero pattern symmetry	symmetric
numeric value symmetry	97%
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'))	70,045	76,243
Cholesky flop count	3.0e+06	3.7e+06
nnz(L+U), no partial pivoting	137,887	150,283
nnz(V) for QR, upper bound nnz(L) for LU	128,989	140,407
nnz(R) for QR, upper bound nnz(U) for LU	470,960	420,989

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 2151 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.