Matrix properties
number of rows	2,541
number of columns	31,022
nonzeros	62,044
structural full rank?	yes
structural rank	2,541
# of blocks from dmperm	163
# strongly connected comp.	131
explicit zero entries	0
nonzero pattern symmetry	0%
numeric value symmetry	0%
type	binary
structure	rectangular
Cholesky candidate?	no
positive definite?	no

author	D. Bates
editor	T. Davis
date	2006
kind	statistical/mathematical problem
2D/3D problem?	no

Ordering statistics:	result
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	73,918
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	4,951

SVD-based statistics:
norm(A)	31.4213
min(svd(A))	0
cond(A)	Inf
rank(A)	2,410
sprank(A)-rank(A)	131
null space dimension	131
full numerical rank?	no
singular value gap	5.51017e+13

singular values (MAT file):	click here
SVD method used:	s = svd (full (R)) ; where [~,R,E] = spqr (A') with droptol of zero
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.