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Keywords = matched pair lie algebras

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23 pages, 418 KiB  
Article
Decomposing Euler–Poincaré Flow on the Space of Hamiltonian Vector Fields
by Oğul Esen, Javier De Lucas, Cristina Sardon Muñoz and Marcin Zając
Symmetry 2023, 15(1), 23; https://doi.org/10.3390/sym15010023 - 22 Dec 2022
Cited by 1 | Viewed by 1665
Abstract
The main result of this paper is a matched-pair decomposition of the space of symmetric contravariant tensors TQ. From this procedure two complementary Lie subalgebras of TQ under mutual interaction arise. Introducing a lift operator, the matched pair decomposition of [...] Read more.
The main result of this paper is a matched-pair decomposition of the space of symmetric contravariant tensors TQ. From this procedure two complementary Lie subalgebras of TQ under mutual interaction arise. Introducing a lift operator, the matched pair decomposition of the space of Hamiltonian vector fields is determined. According to this realization, the Euler–Poincaré flows on such spaces are decomposed into two subdynamics: one is the Euler–Poincaré formulation of isentropic fluid flows, and the other one corresponds with Euler–Poincaré equations on contravariant tensors of order n2. Full article
17 pages, 299 KiB  
Article
3-Hom–Lie Yang–Baxter Equation and 3-Hom–Lie Bialgebras
by Shuangjian Guo, Shengxiang Wang and Xiaohui Zhang
Mathematics 2022, 10(14), 2485; https://doi.org/10.3390/math10142485 - 17 Jul 2022
Cited by 2 | Viewed by 1689
Abstract
In this paper, we first introduce the notion of a 3-Hom–Lie bialgebra and give an equivalent description of the 3-Hom–Lie bialgebras, the matched pairs and the Manin triples of 3-Hom–Lie algebras. In addition, we define O-operators of 3-Hom–Lie algebras and construct solutions [...] Read more.
In this paper, we first introduce the notion of a 3-Hom–Lie bialgebra and give an equivalent description of the 3-Hom–Lie bialgebras, the matched pairs and the Manin triples of 3-Hom–Lie algebras. In addition, we define O-operators of 3-Hom–Lie algebras and construct solutions of the 3-Hom–Lie Yang–Baxter equation in terms of O-operators and 3-Hom–pre-Lie algebras. Finally, we show that a 3-Hom–Lie algebra has a phase space if and only if it is sub-adjacent to a 3-Hom–pre-Lie algebra. Full article
(This article belongs to the Special Issue Hopf-Type Algebras, Lie Algebras, Quantum Groups and Related Topics)
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