Matrix properties
number of rows	14,214
number of columns	14,214
nonzeros	259,688
structural full rank?	yes
structural rank	14,214
# of blocks from dmperm	638
# strongly connected comp.	638
explicit zero entries	0
nonzero pattern symmetry	98%
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	D. Engwirda
editor	T. Davis
date	2006
kind	computational fluid dynamics problem
2D/3D problem?	yes

Additional fields	size and type
coord	full 14214-by-2
t	full 27748-by-3

Notes:

trimesh(t,coord(:,1),coord(:,2),A\ones(n,1))

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	1,188,344
Cholesky flop count	1.8e+08
nnz(L+U), no partial pivoting, with AMD	2,362,474
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	1,623,733
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	3,133,402

SVD-based statistics:
norm(A)	252672
min(svd(A))	0.141414
cond(A)	1.78676e+06
rank(A)	14,214
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.