Matrix properties
number of rows	29,920
number of columns	29,920
nonzeros	2,033,200
structural full rank?	yes
structural rank	29,920
# of blocks from dmperm	2
# strongly connected comp.	2
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	binary
structure	symmetric
Cholesky candidate?	yes
positive definite?	no

author	A. Andrianov
editor	T. Davis
date	2006
kind	optimization problem
2D/3D problem?	no

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	30,169,645
Cholesky flop count	1.1e+11
nnz(L+U), no partial pivoting, with AMD	60,309,370
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	104,531,067
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	193,974,168

Maintained by Tim Davis, last updated 01-Apr-2011.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.