Published online by Cambridge University Press: 24 October 2008
The following paper aims at a more general treatment than has hitherto been given, of the integral expansions of arbitrary functions, from the point of view of integral equation theory.
* Göttingen Dissertation, ad fin.
† Pp. 158–169.
* In this summation, if Δf(λ), Δ;ρ(λ) both vanish, the fraction is to be replaced by zero.
* Hahn, , §§ 8–13.Google Scholar
† Weyl, , p. 275.Google Scholar
* P. 294, Eqn. (20), and p. 301.
† For I cf. Weyl, , p. 293Google Scholar; for II, II (a) cf. pp. 294–5.
* Pp. 300–1.
† Carleman, , p. 25 and p. 75.Google Scholar
* See Weyl, , p. 276 and p. 286.Google Scholar
† For III see Carleman, , p. 102; for IV of. pp. 48–9 and p. 104.Google Scholar
* Cf. Carleman, , p. 47.Google Scholar
† It is assumed that every finite interval of the λ-axis is transformed into a finite interval of the ρ-axis, and ( –∞, ∞ ) into ( – ∞, ∞ ). The changes to be made, if this is not so, are slight, and do not affect the argument.
* Cf. Carleman, , pp. 82 sqq.Google Scholar
* Weyl, , Göltingen Dissertation, 1908.Google Scholar
* An application of the ordinary Fourier Theorem, cf. Weyl, , p. 315, and Plan-cherel.Google Scholar
† It is readily proved that g has, w.r.t. these functions, the characteristic property of ρ w.r.t. P (s, p).
* Acta Math, xxv (1902), p. 161.Google Scholar