Box integrals

  • Authors:
  • D. H. Bailey;J. M. Borwein;R. E. Crandall

  • Affiliations:
  • Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA;Faculty of Computer Science, Dalhousie University, Halifax, NS, Canada B3H 2W5;Center for Advanced Computation, Reed College, Portland, OR, USA

  • Venue:
  • Journal of Computational and Applied Mathematics
  • Year:
  • 2007

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Abstract

By a ''box integral'' we mean here an expectation where r@? runs over the unit n-cube, with q@? and s fixed, explicitly:@!"0^1...@!"0^1((r"1-q"1)^2+...+(r"n-q"n)^2)^s^/^2dr"1...dr"n.The study of box integrals leads one naturally into several disparate fields of analysis. While previous studies have focused upon symbolic evaluation and asymptotic analysis of special cases (notably s=1), we work herein more generally-in interdisciplinary fashion-developing results such as: (1) analytic continuation (in complex s), (2) relevant combinatorial identities, (3) rapidly converging series, (4) statistical inferences, (5) connections to mathematical physics, and (6) extreme-precision quadrature techniques appropriate for these integrals. These intuitions and results open up avenues of experimental mathematics, with a view to new conjectures and theorems on integrals of this type.