In the preprint [Mixed volume and an extension of intersection theory of divisors](http://arxiv.org/abs/0812.0433), Kaveh and Khovanskii define an intersection index for an $n$-tuple of finite-dimensional spaces of rational functions on an irreducible $n$-dimensional complex algebraic variety. Among the properties of the intersection index they prove, there is an analog of Alexandrov–Fenchel inequality (Theorem 4.28 and Corollary 4.29).