0PM5 Proposition 29 Let KK and K1K_{1} be oriented knots and (−K)(-K) be KK with the reversed orientation. Then ℋi,j(K#K1)=ℋi,j((−K)#K1){\cal H}^{i,j}(K\#K_{1})={\cal H}^{i,j}((-K)\#K_{1}) (156)