A note on palindromic delta-vectors for certain rational polytopes (Q1010674)

Summary: 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.