Matrix properties
number of rows	11,341
number of columns	11,341
nonzeros	97,193
structural full rank?	yes
structural rank	11,341
# of blocks from dmperm	49
# strongly connected comp.	1
explicit zero entries	1,330
nonzero pattern symmetry	symmetric
numeric value symmetry	78%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	E. Acar
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	191,898
Cholesky flop count	1.3e+07
nnz(L+U), no partial pivoting, with AMD	372,455
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	15,410,571
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	28,059,977

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 1330 explicit zero entries.

SVD-based statistics:
norm(A)	201.519
min(svd(A))	0.00545253
cond(A)	36958.8
rank(A)	11,341
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.