Matrix properties
number of rows	48
number of columns	48
nonzeros	306
structural full rank?	yes
structural rank	48
# 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	NASA
editor	G. Kumfert, A. Pothen
date	2003
kind	structural problem
2D/3D problem?	yes

Additional fields	size and type
coord	full 48-by-2

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	336
Cholesky flop count	2.7e+03
nnz(L+U), no partial pivoting, with AMD	624
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	432
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	769

SVD-based statistics:
norm(A)	9.13416
min(svd(A))	1.74006
cond(A)	5.24933
rank(A)	48
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.