Matrix properties
number of rows	43,520
number of columns	43,520
nonzeros	3,121,200
structural full rank?	yes
structural rank	43,520
# 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	58,450,161
Cholesky flop count	3.1e+11
nnz(L+U), no partial pivoting, with AMD	116,856,802
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	305,055,480
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	411,847,215

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.