Matrix properties
number of rows	3,973
number of columns	3,973
nonzeros	79,077
structural full rank?	yes
structural rank	3,973
# of blocks from dmperm	1
# strongly connected comp.	1
entries not in dmperm blocks	0
explicit zero entries	1,134
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	real
structure	symmetric
Cholesky candidate?	yes
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'))	106,907	129,421
Cholesky flop count	3.9e+06	6.5e+06
nnz(L+U), no partial pivoting	209,841	254,869
nnz(V) for QR, upper bound nnz(L) for LU	224,006	271,016
nnz(R) for QR, upper bound nnz(U) for LU	727,154	786,987

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 1134 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.