let be a relation over set ( ) a relation is symmetric if for each , if then (if then )
symmetric there exists so that
the matrix that represents such relations has the property , e.g.
ld(matrix(3, [0,1,0, 1,0,0, 0,0,0]))
let be a relation over set ( ) a relation is symmetric if for each , if then (if then )
symmetric there exists so that
the matrix that represents such relations has the property , e.g.
ld(matrix(3, [0,1,0, 1,0,0, 0,0,0]))