Geodesic
On customary spaces of Leibniz–Poisson algebras
Izvestiya of Saratov University. Mathematics. Mechanics. Informatics, Tome 20 (2020) no. 3, pp. 290-296 
S. M. Ratseev; O. I. Cherevatenko. On customary spaces of Leibniz–Poisson algebras. Izvestiya of Saratov University. Mathematics. Mechanics. Informatics, Tome 20 (2020) no. 3, pp. 290-296. http://geodesic.mathdoc.fr/item/ISU_2020_20_3_a1/
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     title = {On customary spaces of {Leibniz{\textendash}Poisson} algebras},
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Voir la notice de l'article provenant de la source Math-Net.Ru

Let $K$ be a base field of characteristic zero. It is well known that in this case all information about varieties of linear algebras $\bf{V}$ contains in its polylinear components $P_n(\bf{V})$, $n \in \mathbb{N}$, where $P_n(\bf{V})$ is a linear span of polylinear words of $n$ different letters in a free algebra $K(X,\bf{V})$. D. Farkas defined customary polynomials and proved that every Poisson PI-algebra satisfies some customary identity. Poisson algebras are special case of Leibniz–Poisson algebras. In the paper the sequence of customary spaces of the free Leibniz–Poisson algebra $\{Q_{2n}\}_{n\geq 1}$ is investigated. The basis and dimension of spaces $Q_ {2n}$ are given. It is also proved that in case of a base field of characteristic zero any nontrivial identity of the free Leibniz–Poisson algebra has nontrivial identities in customary spaces.

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