Published online by Cambridge University Press: 20 November 2018
The Weierstrass - respectively Weierstrass - Stieltjes transform of a function F(t) or μ(t) is defined by
1.1
and
1.2
for all x for which these integrals converge. In what follows we shall always assume that F(t) is Lebesgue integrable in every finite interval and that μ(t) is a function of bounded variation.