Two-sided estimates of the approximation numbers of certain Volterra integral operators
D. Edmunds, W. Evans, D. Harris (1997)
Studia Mathematica
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We consider the Volterra integral operator defined by . Under suitable conditions on u and v, upper and lower estimates for the approximation numbers of T are established when 1 < p < ∞. When p = 2 these yield . We also provide upper and lower estimates for the and weak norms of (an(T)) when 1 < α < ∞.