Matrix properties
number of rows	1,879
number of columns	1,879
nonzeros	12,818
structural full rank?	yes
structural rank	1,879
# of blocks from dmperm	24
# strongly connected comp.	1
explicit zero entries	108
nonzero pattern symmetry	symmetric
numeric value symmetry	45%
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	7,875
Cholesky flop count	3.8e+04
nnz(L+U), no partial pivoting, with AMD	13,871
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	183,719
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	1,373,161

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 108 explicit zero entries.

SVD-based statistics:
norm(A)	1047.3
min(svd(A))	0.00151484
cond(A)	691358
rank(A)	1,879
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.