Matrix properties
number of rows	27,792
number of columns	27,792
nonzeros	173,796
structural full rank?	yes
structural rank	27,792
# of blocks from dmperm	3,460
# strongly connected comp.	285
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	real
structure	symmetric
Cholesky candidate?	no
positive definite?	no

author	J. More'
editor	P. Toint
date	1989
kind	2D/3D problem
2D/3D problem?	yes

Additional fields	size and type
b	full 27792-by-1

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	7,006,763
Cholesky flop count	7.6e+09
nnz(L+U), no partial pivoting, with AMD	13,985,734
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	18,366,688
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	30,659,927

SVD-based statistics:
norm(A)	11.9372
min(svd(A))	0.0201783
cond(A)	591.589
rank(A)	27,792
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.