Nonlinear motion modeling and analysis of underwater cables under complex loads based on global nodal position finite element method in Hamiltonian formulation

H Zhou, W **ao, D Hu, X Han - Applied Ocean Research, 2024‏ - Elsevier
The nonlinear dynamic response of underwater cable is essential for underwater equipment
system. This paper presents an effective global nodal position finite element method in …

Symplectic double extensions for restricted quasi-Frobenius Lie (super) algebras

S Bouarroudj, Q Ehret, Y Maeda - SIGMA. Symmetry, Integrability and …, 2023‏ - emis.de
In this paper, we present a method of symplectic double extensions for restricted quasi-
Frobenius Lie superalgebras. Certain cocycles in the restricted cohomology represent …

Symplectic structures, product structures and complex structures on Leibniz algebras

R Tang, N Xu, Y Sheng - Journal of Algebra, 2024‏ - Elsevier
In this paper, a symplectic structure on a Leibniz algebra is defined to be a symmetric
nondegenerate bilinear form satisfying certain compatibility condition, and a phase space of …

[HTML][HTML] Pseudo-Kähler and hypersymplectic structures on semidirect products

D Conti, A Gil-García - Differential Geometry and its Applications, 2025‏ - Elsevier
We study left-invariant pseudo-Kähler and hypersymplectic structures on semidirect
products G⋊ H; we work at the level of the Lie algebra g⋊ h. In particular we consider the …

[HTML][HTML] Complex symplectic Lie algebras with large Abelian subalgebras

G Bazzoni, M Freibert, A Latorre, N Tardini - Linear Algebra and its …, 2023‏ - Elsevier
We present two constructions of complex symplectic structures on Lie algebras with large
Abelian ideals. In particular, we completely classify complex symplectic structures on almost …

Double extensions of quasi-Frobenius Lie superalgebras with degenerate center

S Bouarroudj, Q Ehret - Communications in Algebra, 2024‏ - Taylor & Francis
We develop the process of symplectic double extensions for Lie superalgebras with
degenerate center. The construction is a superization of a recent work by Fischer, and …

Nilmanifolds with non-nilpotent complex structures and their pseudo-K\" ahler geometry

A Latorre, L Ugarte - arxiv preprint arxiv:2407.18692, 2024‏ - arxiv.org
We classify nilpotent Lie algebras with complex structures of weakly non-nilpotent type in
real dimension eight, which is the lowest dimension where they arise. Our study, together …

[HTML][HTML] Spatial rigid-flexible-liquid coupling dynamics of towed system analyzed by a hamiltonian finite element method

H Ding, Q Wang, W Hu, X Yin - Journal of Marine Science and …, 2021‏ - mdpi.com
An effective Hamiltonian finite element method is presented in this paper to investigate the
three-dimensional dynamic responses of a towed cable-payload system with large …

Anti-quasi-Sasakian manifolds

D Di Pinto, G Dileo - Annals of Global Analysis and Geometry, 2023‏ - Springer
We introduce and study a special class of almost contact metric manifolds, which we call anti-
quasi-Sasakian (aqS). Among the class of transversely Kähler almost contact metric …

Klasifikasi Aljabar Lie Forbenius-Quasi Dari Aljabar Lie Filiform Berdimensi≤ 5

PN Pratiwi, E Kurniadi, F Firdaniza - Jambura Journal of …, 2024‏ - ejurnal.ung.ac.id
Dalam penelitian ini dipelajari tentang aljabar Lie Frobenius-quasi real dan aljabar Lie
filiform berdimensi≤ 5. Penelitian ini bertujuan untuk menetapkan klasifikasi aljabar Lie …