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{\bf Matthew H.\ J.\ Fiset and Alexander M.\ Kasprzyk}
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{\bf A Note on Palindromic $\delta$-Vectors for Certain Rational Polytopes}
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Let $P$ be a convex polytope containing the origin, whose dual is a
lattice polytope. Hibi's Palindromic Theorem tells us that if $P$ is
also a lattice polytope then the Ehrhart $\delta$-vector of $P$ is
palindromic. Perhaps less well-known is that a similar result holds
when $P$ is rational. We present an elementary lattice-point proof of
this fact.
\bye