LYM inequalities for \(t\)-antichains (Q1352322)

A \(t\)-antichain is a set of \((0,1)\)-vectors such that for any \(v\), \(w\) in it there exist more than \(t\) coordinates \(i\) such that \(v_i=1\), \(w_i=0\), so that a \(0\)-antichain is an antichain. The authors extend the basic LYM inequalities for antichains to \(t\)-antichains and indicate how this applies to coding theory.