Non-degenerate invariant (super) symmetric bilinear forms on simple Lie (super) algebras

S Bouarroudj, A Krutov, D Leites… - Algebras and …, 2018 - Springer
We review the list of non-degenerate invariant (super) symmetric bilinear forms (briefly: NIS)
on the following simple (relatives of) Lie (super) algebras:(a) with symmetrizable Cartan …

Classification of simple Lie superalgebras in characteristic 2

S Bouarroudj, A Lebedev, D Leites… - International …, 2023 - academic.oup.com
All results concern characteristic 2. We describe two procedures; each of which to every
simple Lie algebra assigns a simple Lie superalgebra. We prove that every simple finite …

Computer-aided study of double extensions of restricted lie superalgebras preserving the nondegenerate closed 2-forms in characteristic 2

S Bouarroudj, D Leites, J Shang - Experimental Mathematics, 2022 - Taylor & Francis
A Lie (super) algebra with a nondegenerate invariant symmetric bilinear form B is called a
nis-(super) algebra. The double extension g of a nis-(super) algebra a is the result of …

Manin triples and non-degenerate anti-symmetric bilinear forms on Lie superalgebras in characteristic 2

S Benayadi, S Bouarroudj - Journal of Algebra, 2023 - Elsevier
In this paper, we introduce and develop the notion of a Manin triple for a Lie superalgebra g
defined over a field of characteristic p= 2. We find cohomological necessary conditions for …

Hom-Lie superalgebras in characteristic 2

S Bouarroudj, A Makhlouf - Mathematics, 2023 - mdpi.com
The main goal of this paper was to develop the structure theory of Hom-Lie superalgebras in
characteristic 2. We discuss their representations, semidirect product, and α k-derivations …

On odd parameters in geometry

D Leites - arXiv preprint arXiv:2210.17096, 2022 - arxiv.org
1) In 1976, looking at simple finite-dimensional complex Lie superalgebras, J.~ Bernstein
and I, and independently M.~ Duflo, observed that certain divergence-free vectorial Lie …

[HTML][HTML] Double extensions of Lie superalgebras in characteristic 2 with nondegenerate invariant supersymmetric bilinear form

S Benayadi, S Bouarroudj - Journal of Algebra, 2018 - Elsevier
A Lie (super) algebra with a non-degenerate invariant symmetric bilinear form will be called
a NIS-Lie (super) algebra. The double extension of a NIS-Lie (super) algebra is the result of …

Double and Lagrangian extensions for quasi-Frobenius Lie superalgebras

S Bouarroudj, Y Maeda - Journal of Algebra and Its Applications, 2023 - World Scientific
A Lie superalgebra is called quasi-Frobenius if it admits a closed anti-symmetric non-
degenerate bilinear form. We study the notion of double extensions of quasi-Frobenius Lie …

Classification of simple algebras in the Deligne category Rep (St)

N Harman, D Kalinov - Journal of Algebra, 2020 - Elsevier
Classification of simple algebras in the Deligne category Rep(St) - ScienceDirect Skip to main
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Analogs of Bol operators on superstrings

S Bouarroudj, D Leites… - International Journal of …, 2022 - World Scientific
The Bol operators are unary differential operators between spaces of weighted densities on
the 1-dimensional manifold invariant under projective transformations of the manifold. On …