Matrix properties
number of rows	34
number of columns	34
nonzeros	156
# strongly connected comp.	1
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	binary
structure	symmetric
Cholesky candidate?	no
positive definite?	no

author	W. Zachary
editor	M. Newman
date	1977
kind	undirected graph
2D/3D problem?	no

Notes:

Network collection from M. Newman                                          
http://www-personal.umich.edu/~mejn/netdata/                               
                                                                           
The graph "karate" contains the network of friendships between the 34      
members of a karate club at a US university, as described by Wayne Zachary 
in 1977.  If you use these data in your work, please cite W. W. Zachary, An
information flow model for conflict and fission in small groups, Journal of
Anthropological Research 33, 452-473 (1977).                               

SVD-based statistics:
norm(A)	6.7257
min(svd(A))	5.06585e-18
cond(A)	1.32765e+18
rank(A)	24
null space dimension	10
full numerical rank?	no
singular value gap	3.04055e+14

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.