Note dual polytopes of rational convex polytopes


LetP⊄ ℝd be a rational convex polytope with dimP=d such that the origin of ℝd is contained in the interiorP − ∂P ofP. In this paper, from a viewpoint of enumeration of certain rational points inP (which originated in Ehrhart's work), a necessary and sufficient condition for the dual polytopeP dual ofP to be integral is presented.

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This research was performed while the author was staying at Massachusetts Institute of Technology during the 1988–89 academic year.

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Hibi, T. Note dual polytopes of rational convex polytopes. Combinatorica 12, 237–240 (1992).

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AMS Subject Classification code (1991)

  • 52 B 20