Some ss-numbers of an integral operator of Hardy type in Banach function spaces

Let sn(T)sn(T) denote the nnth approximation, isomorphism, Gelfand, Kolmogorov or Bernstein number of the Hardy-type integral operator TT given by Tf(x)=v(x)∫axu(t)f(t)dt,x∈(a,b)(−∞0C1,C2>0 depend only on the space EE.