paper

Poisson -Lie algebras: constructions and the structure of solvable algebras

arXiv:2605.01785

Abstract

In this paper, we develop a construction of Poisson -Lie algebras that generalizes the Jacobian -Lie construction. Using the Grassmann--Plücker relations, we derive necessary and sufficient conditions under which the resulting bracket defines a Poisson -Lie algebra. We also prove that suitable quotients of tensor products of Poisson algebras carry natural Poisson -Lie structures. Conversely, we give a tensor-type procedure that associates a Poisson algebra to a given Poisson -Lie algebra. The quotient and converse constructions thus provide two systematic methods for relating Poisson algebras to Poisson -Lie algebras. We further establish analogues of Engel's theorem and Lie's theorem and characterize solvability and nilpotency of Poisson -Lie algebras in terms of their underlying associative and -Lie structures. We introduce hypo-nilpotent ideals and investigate maximal such ideals in finite-dimensional solvable Poisson -Lie algebras. Finally, we prove that the generalized eigenspaces of multiplication operators are ideals.

20 pages