Matrix properties
number of rows	10,262
number of columns	10,262
nonzeros	61,046
structural full rank?	yes
structural rank	10,262
# of blocks from dmperm	1
# strongly connected comp.	1
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	real
structure	symmetric
Cholesky candidate?	no
positive definite?	no

author
editor	N. Gould, Y. Hu, J. Scott
date	2004
kind	2D/3D problem
2D/3D problem?	yes

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	513,084
Cholesky flop count	8.9e+07
nnz(L+U), no partial pivoting, with AMD	1,015,906
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	1,348,929
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	2,602,669

SVD-based statistics:
norm(A)	3.24287
min(svd(A))	4.51195e-17
cond(A)	7.18729e+16
rank(A)	10,261
sprank(A)-rank(A)	1
null space dimension	1
full numerical rank?	no
singular value gap	1.08313e+14

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.