Séminaire Lotharingien de Combinatoire, 93B.148 (2025), 11 pp.

Masato Konoike

A New Class of Magic Positive Ehrhart Polynomials of Reflexive Polytopes

Abstract. The magic positivity of Ehrhart polynomials is a useful tool for proving the real-rootedness of the h*-polynomials. In this article, we provide a new class of reflexive polytopes whose Ehrhart polynomials are magic positive. First, we show that the Ehrhart polynomials of Stasheff polytopes are magic positive. Second, we also prove a partial result towards the magic positivity of the Ehrhart polynomials of the dual polytopes of the symmetric edge polytopes of cycles.


Received: November 15, 2024. Accepted: February 15, 2025. Final version: April 1, 2025.

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