The cushion problem

Hans Jürgen Borchers, Rathindra Nath Sen

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


The cushion problem is the following. Let M be an order complete space,1 U ⊂ M a D-set, a, b ∈ U, a ≪ b and p,q ∈ βI[a, b] such that a, b, p, q are not coplanar, for example as in Fig. 9.1. Let ξ ∈ l[a, p] and η ∈ l[a, q]. Then there exist points ξ′ ∈ l[q, b] and η′ ∈ l[p, b] such that λ(ξ, ξ′) and λ(η, η′).

Original languageEnglish
Title of host publicationMathematical Implications of Einstein-Weyl Causality
Number of pages7
StatePublished - 1 Dec 2006

Publication series

NameLecture Notes in Physics
ISSN (Print)0075-8450

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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