Matrix properties
number of rows	1,182
number of columns	1,182
nonzeros	32,702
structural full rank?	yes
structural rank	1,182
# of blocks from dmperm	162
# strongly connected comp.	162
explicit zero entries	45
nonzero pattern symmetry	90%
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	A. Chapman
editor	A. Baggag, Y. Saad
date	1996
kind	subsequent computational fluid dynamics problem
2D/3D problem?	yes

Additional fields	size and type
b	full 1182-by-1
x	full 1182-by-1

Notes:

next: - first: DRIVCAV/cavity05        
pattern is the same as DRIVCAV/cavity05

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	33,060
Cholesky flop count	1.2e+06
nnz(L+U), no partial pivoting, with AMD	64,938
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	42,951
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	124,143

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 45 explicit zero entries.

SVD-based statistics:
norm(A)	46.6045
min(svd(A))	5.79913e-06
cond(A)	8.03647e+06
rank(A)	1,182
sprank(A)-rank(A)	0
null space dimension	0
full numerical rank?	yes

singular values (MAT file):	click here
SVD method used:	s = svd (full (A)) ;
status:	ok

For a description of the statistics displayed above, click here.

Maintained by Tim Davis, last updated 12-Mar-2014.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.