Matrix properties
number of rows	14,270
number of columns	14,270
nonzeros	307,858
structural full rank?	yes
structural rank	14,270
# of blocks from dmperm	1,556
# strongly connected comp.	31
explicit zero entries	0
nonzero pattern symmetry	1%
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	20,564,513
Cholesky flop count	8.0e+10
nnz(L+U), no partial pivoting, with AMD	41,114,756
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	633,737
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	1,310,622

SVD-based statistics:
norm(A)	19.9134
min(svd(A))	4.94008e-14
cond(A)	4.03098e+14
rank(A)	14,267
sprank(A)-rank(A)	3
null space dimension	3
full numerical rank?	no
singular value gap	4.56844

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.