Matrix properties
number of rows	1,821
number of columns	1,821
nonzeros	52,685
structural full rank?	yes
structural rank	1,821
# of blocks from dmperm	1
# strongly connected comp.	1
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	real
structure	symmetric
Cholesky candidate?	yes
positive definite?	yes

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	58,346
Cholesky flop count	2.4e+06
nnz(L+U), no partial pivoting, with AMD	114,871
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	91,016
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	257,258

SVD-based statistics:
norm(A)	2.26184e+07
min(svd(A))	0.00134331
cond(A)	1.68378e+10
rank(A)	1,821
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.