Matrix properties
number of rows	16,614
number of columns	16,614
nonzeros	1,096,948
structural full rank?	yes
structural rank	16,614
# of blocks from dmperm	1
# strongly connected comp.	1
explicit zero entries	0
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:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	5,704,322
Cholesky flop count	3.0e+09
nnz(L+U), no partial pivoting, with AMD	11,392,030
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	7,343,038
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	13,987,342

SVD-based statistics:
norm(A)	5.58628e+08
min(svd(A))	0.000194209
cond(A)	2.87642e+12
rank(A)	16,527
sprank(A)-rank(A)	87
null space dimension	87
full numerical rank?	no
singular value gap	1.00608

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.