In this paper,the conditions on pairs of weights(u,v)are given such that for the generalized Hardy operator Tf(x)=∫0^∞K(x,y)f(y)dy the following Φ-inequality
If L be link with two components and S1,S2,…Sn a switching sequence suhc that SnSn-1…S1L is unlinked.It is proved that lk(L)=∑i-1^n εi(L)and then we obtain