• Corpus ID: 15003121

On Stanley's reciprocity theorem for rational cones

@article{Beck2004OnSR,
  title={On Stanley's reciprocity theorem for rational cones},
  author={Matthias Beck and Mike Develin},
  journal={arXiv: Combinatorics},
  year={2004}
}
We give a short, self-contained proof of Stanley's reciprocity theorem for a rational cone K \subset R^d. Namely, let sigma_K (x) = sum_{m \in K \cap Z^d} x^m. Then sigma_K (x) and sigma_int(K) (x) are rational functions which satisfy the identity sigma_K (1/x) = (-1)^d sigma_int(K) (x). A corollary of Stanley's theorem is the Ehrhart-Macdonald reciprocity theorem for the lattice-point enumerator of rational polytopes. A distinguishing feature of our proof is that it uses neither the shelling… 
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