@misc{10498/35874, year = {2024}, url = {http://hdl.handle.net/10498/35874}, abstract = {This paper studies the abelian subalgebras and ideals of maximal dimension of Poisson algebras P of dimension n. We introduce the invariants α and β for Poisson algebras, which correspond to the dimension of an abelian subalgebra and ideal of maximal dimension, respectively. We prove that these invariants coincide if α(P) = n−1. We characterize the Poisson algebras with α(P) = n − 2 over arbitrary fields. In particular, we characterize Lie algebras L with α(L) = n − 2. We also show that α(P) = n − 2 for nilpotent Poisson algebras implies β(P) = n−2. Finally, we study these invariants for various distinguished Poisson algebras, providing us with several examples and counterexamples.}, publisher = {Academic Press Inc.}, keywords = {Poisson algebra}, keywords = {Lie algebra}, keywords = {abelian subalgebra}, keywords = {abelian ideal}, title = {Abelian subalgebras and ideals of maximal dimension in Poisson algebras}, doi = {10.1016/J.JALGEBRA.2024.07.032}, author = {Fernández Ouaridi, Amir and Navarro, R.M. and Towers, D.A.}, }