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

David Edmunds, Amiran Gogatishvili, Tengiz Kopaliani +1

Let $s_n(T)$ denote the $n$th approximation, isomorphism, Gelfand, Kolmogorov or Bernstein number of the Hardy-type integral operator $T$ given by $$ Tf(x)=v(x)\int_{a}^{x}u(t)f(…