Matrix properties
number of rows	14,822
number of columns	14,822
nonzeros	715,804
structural full rank?	yes
structural rank	14,822
# 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	F. Shakib
editor	T. Davis
date	2004
kind	computational fluid dynamics problem
2D/3D problem?	yes

Additional fields	size and type
b	full 14822-by-1

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	2,507,325
Cholesky flop count	6.2e+08
nnz(L+U), no partial pivoting, with AMD	4,999,828
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	2,750,237
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	5,482,885

SVD-based statistics:
norm(A)	26.0289
min(svd(A))	1.27802e-05
cond(A)	2.03665e+06
rank(A)	14,822
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.