Matrix properties
number of rows	3,363
number of columns	3,363
nonzeros	99,471
structural full rank?	yes
structural rank	3,363
# 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	126,407
Cholesky flop count	6.4e+06
nnz(L+U), no partial pivoting, with AMD	249,451
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	313,241
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	861,697

SVD-based statistics:
norm(A)	3.78703e+09
min(svd(A))	0.000324399
cond(A)	1.1674e+13
rank(A)	3,344
sprank(A)-rank(A)	19
null space dimension	19
full numerical rank?	no
singular value gap	1.35809

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.