2026/2/8
Esmaeil Peyghan

Esmaeil Peyghan

Academic rank: Professor
ORCID: https://orcid.org/0000-0002-2713-6253
Education: PhD.
H-Index:
Faculty: Science
ScholarId:
E-mail: e-peyghan [at] araku.ac.ir
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Research

Title
Formal deformations and extensions of ‘twisted’ Lie algebras
Type
JournalPaper
Keywords
Twisted Lie algebra, Derivation, Formal deformation, Central Extension, Cohomology
Year
2025
Journal Advanced Studies: Euro-Tbilisi Mathematical Journal
DOI
Researchers Imed Basdouri ، Esmaeil Peyghan ، Mohamed Amin Sadraoui ، Ripan Saha

Abstract

The interplay between derivations and algebraic structures has been a subject of significant interest and exploration. Inspired by Yau’s twist and the Leibniz rule, we investigate the formal deformation of twisted Lie algebras by invertible derivations, herein referred to as “InvDer Lie”. We define representations of InvDer Lie, elucidate cohomology structures of order 1 and 2, and identify infinitesimals as 2-cocycles. Furthermore, we explore central extensions of InvDer Lie, revealing their intricate relationship with cohomology theory.