Matrix properties
number of rows	25,228
number of columns	25,228
nonzeros	175,027
structural full rank?	yes
structural rank	25,228
# of blocks from dmperm	1
# strongly connected comp.	1
explicit zero entries	0
nonzero pattern symmetry	67%
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	D. Averous
editor	T. Davis
date	1998
kind	thermal problem
2D/3D problem?	yes

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	1,156,565
Cholesky flop count	2.2e+08
nnz(L+U), no partial pivoting, with AMD	2,287,902
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	1,411,488
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	2,800,131

SVD-based statistics:
norm(A)	3.3399
min(svd(A))	0.00127529
cond(A)	2618.94
rank(A)	25,228
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.