Matrix properties
number of rows	7,337
number of columns	7,337
nonzeros	156,508
structural full rank?	yes
structural rank	7,337
# of blocks from dmperm	672
# strongly connected comp.	31
explicit zero entries	0
nonzero pattern symmetry	2%
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	J. Mallya
editor	T. Davis
date	1997
kind	chemical process simulation problem
2D/3D problem?	no

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	5,667,528
Cholesky flop count	1.1e+10
nnz(L+U), no partial pivoting, with AMD	11,327,719
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	269,468
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	603,211

SVD-based statistics:
norm(A)	18.3146
min(svd(A))	7.65545e-13
cond(A)	2.39236e+13
rank(A)	7,336
sprank(A)-rank(A)	1
null space dimension	1
full numerical rank?	no
singular value gap	5128.12

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.