TY - Type of reference TI - [FORTHCOMING] Cohomologie et déformations des algèbres de Lie restreintes et leurs morphismes en caractéristique positive AU - Quentin Ehret AU - Abdenacer Makhlouf AB - The main purpose of this paper is to study cohomology and develop a deformation theory of restricted Lie algebras in positive characteristic $$$p$$$ > $$$0$$$. In the case $$$p\geq3$$$, it is shown that the deformations of restricted Lie algebras are controlled by the restricted cohomology introduced by Evans and Fuchs. Moreover, we introduce a new cohomology that controls the deformations of restricted morphisms of restricted Lie algebras. In the case $$$p=2$$$, we provide a full restricted cohomology complex with values in a restricted module and investigate its connections with formal deformations. Furthermore, we introduce a full deformation cohomology that controls deformations of restricted morphisms of restricted Lie algebras in characteristic $$$2$$$. As example, we discuss restricted cohomology with adjoint coefficients of restricted Heisenberg Lie algebras in characteristic $$$p\geq 2$$$. DO - À venir JF - Avancées en Mathématiques Pures et Appliquées KW - Modular Lie algebra, restricted cohomology, deformation, Modular Lie algebra, restricted cohomology, deformation, L1 - LA - fr PB - ISTE OpenScience DA - 2025/04/1er SN - 1869-6090 TT - [FORTHCOMING] Cohomology and deformations of restricted Lie algebras and their morphisms in positive characteristic UR - https://www.openscience.fr/Cohomologie-et-deformations-des-algebres-de-Lie-restreintes-et-leurs-morphismes-en-caracteristique-positive IS - Articles à paraître
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