Matrix properties
number of rows	4,562
number of columns	5,761
nonzeros	2,462,970
structural full rank?	yes
structural rank	4,562
# of blocks from dmperm	1
# strongly connected comp.	1
explicit zero entries	0
nonzero pattern symmetry	0%
numeric value symmetry	0%
type	integer
structure	rectangular
Cholesky candidate?	no
positive definite?	no

author	J.-C. Faugeres
editor	J.-G. Dumas
date	2008
kind	combinatorial problem
2D/3D problem?	no

Notes:

Gro"bner basis from Jean-Charles Fauge`res,                 
From Jean-Guillaume Dumas' Sparse Integer Matrix Collection,
http://ljk.imag.fr/membres/Jean-Guillaume.Dumas/simc.html   
                                                            
http://www-calfor.lip6.fr/~jcf/                             
                                                            
Filename in JGD collection: Grobner/c8_mat11                

Ordering statistics:	result
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	10,209,726
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	9,285,338

SVD-based statistics:
norm(A)	3.40249e+07
min(svd(A))	0.370546
cond(A)	9.18235e+07
rank(A)	4,562
sprank(A)-rank(A)	0
null space dimension	0
full numerical rank?	yes

singular values (MAT file):	click here
SVD method used:	s = piro_band_svd (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.