Three two-dimensional Weyl steps in the circle problem I. The Hessian determinant

• Autorzy: Ulrike M. A. Vorhauer , Eduard Wirsing
• Języki publikacji: EN

Abstrakty

EN

1. Summary. In a sequence of three papers we study the circle problem and its generalization involving the logarithmic mean. Most of the deeper results in this area depend on estimates of exponential sums. For the circle problem itself Chen has carried out such estimates using three two-dimensional Weyl steps with complicated techniques. We make the same Weyl steps but our approach is simpler and clearer. Crucial is a good understanding of the Hessian determinant that appears and a simple estimate of certain exponential integrals.
In Part I we determine the order of magnitude of the Hessian as well as that of the maximum of the second derivatives for the functions h, which are third order differences of the two-dimensional Euclidean vector norm.

• Wydawca: Institute of Mathematics Polish Academy of Sciences
• Czasopismo: Acta Arithmetica
• Rocznik: 1999
• Tom: 91
• Numer: 1
• Strony: 43-55

Daty

wydano

1999

otrzymano

1998-03-24

Twórcy

autor

Ulrike M. A. Vorhauer

• Universität Ulm, Helmholtzstraße 18, D-89069 Ulm, Germany

autor

Eduard Wirsing

• Universität Ulm, Helmholtzstraße 18, D-89069 Ulm, Germany

Bibliografia

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• [7] E. C. Titchmarsh, On Epstein's zeta-function, Proc. London Math. Soc. (2) 36 (1934), 485-500.
• [8] E. C. Titchmarsh, The lattice-points in a circle, Proc. London Math. Soc. (2) 38 (1935), 96-115; Corrigendum, Proc. London Math. Soc., 555.
• [9] E. C. Titchmarsh, On the order of ζ(1/2 + it), Quart. J. Math. Oxford Ser. 13 (1942), 11-17.
• [10] A. Walfisz, Zentralblatt für Mathematik und ihre Grenzgebiete 8 (1934), 301.