Matrix properties
number of rows	2,283
number of columns	2,283
nonzeros	47,901
structural full rank?	yes
structural rank	2,283
# of blocks from dmperm	1
# strongly connected comp.	1
entries not in dmperm blocks	0
explicit zero entries	836
nonzero pattern symmetry	symmetric
numeric value symmetry	86%
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'))	49,911	57,316
Cholesky flop count	1.4e+06	2.0e+06
nnz(L+U), no partial pivoting	97,539	112,349
nnz(V) for QR, upper bound nnz(L) for LU	82,052	125,243
nnz(R) for QR, upper bound nnz(U) for LU	245,708	340,206

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 836 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.