Matrix properties
number of rows	301
number of columns	301
nonzeros	1,250
structural full rank?	yes
structural rank	301
# of blocks from dmperm	15
# strongly connected comp.	9
explicit zero entries	134
nonzero pattern symmetry	77%
numeric value symmetry	71%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	Rajat
editor	T. Davis
date	2004
kind	circuit simulation problem
2D/3D problem?	no

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	1,169
Cholesky flop count	4.7e+03
nnz(L+U), no partial pivoting, with AMD	2,037
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	1,938
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	3,587

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 134 explicit zero entries.

SVD-based statistics:
norm(A)	3.83917
min(svd(A))	7.11913e-05
cond(A)	53927.5
rank(A)	301
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.