Matrix properties
number of rows	100
number of columns	100
nonzeros	708
structural full rank?	yes
structural rank	100
# of blocks from dmperm	48
# strongly connected comp.	1
explicit zero entries	0
nonzero pattern symmetry	51%
numeric value symmetry	7%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	M. Morandini
editor	T. Davis
date	2006
kind	structural problem
2D/3D problem?	yes

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	762
Cholesky flop count	6.7e+03
nnz(L+U), no partial pivoting, with AMD	1,424
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	1,352
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	2,049

SVD-based statistics:
norm(A)	50002.4
min(svd(A))	2.11712e-08
cond(A)	2.36182e+12
rank(A)	100
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.