Matrix properties
number of rows	5,773
number of columns	5,773
nonzeros	71,701
structural full rank?	yes
structural rank	5,773
# of blocks from dmperm	212
# strongly connected comp.	212
explicit zero entries	104
nonzero pattern symmetry	symmetric
numeric value symmetry	50%
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	175,848
Cholesky flop count	9.3e+06
nnz(L+U), no partial pivoting, with AMD	345,923
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	239,089
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	457,850

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 104 explicit zero entries.

SVD-based statistics:
norm(A)	1.29212e+08
min(svd(A))	6.19751e-05
cond(A)	2.0849e+12
rank(A)	5,772
sprank(A)-rank(A)	1
null space dimension	1
full numerical rank?	no
singular value gap	1.89725

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.