English

Compatible Feigin-Odesskii Poisson brackets

Algebraic Geometry 2022-08-02 v2

Abstract

We prove that several Feigin-Odesskii Poisson brackets associated with normal elliptic curves in Pn{\mathbb P}^n are compatible if and only if they are contained in a scroll or in a Veronese surface in P5{\mathbb P}^5 (with an exception of one case when n=3n=3). In the case n=3n=3 we determine the quartic corresponding to the Schouten bracket of two (non-compatible) Poisson brackets associated with normal elliptic curves E1E_1 and E2E_2.

Cite

@article{arxiv.2207.07770,
  title  = {Compatible Feigin-Odesskii Poisson brackets},
  author = {Nikita Markarian and Alexander Polishchuk},
  journal= {arXiv preprint arXiv:2207.07770},
  year   = {2022}
}

Comments

15 pages, v2: strengthened Corollary C for even n

R2 v1 2026-06-25T00:57:49.085Z