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Self-similar Lie algebras

Laurent Bartholdi (2015)

Journal of the European Mathematical Society

We give a general definition of branched, self-similar Lie algebras, and show that important examples of Lie algebras fall into that class. We give sufficient conditions for a self-similar Lie algebra to be nil, and prove in this manner that the self-similar algebras associated with Grigorchuk’s and Gupta–Sidki’s torsion groups are nil as well as self-similar.We derive the same results for a class of examples constructed by Petrogradsky, Shestakov and Zelmanov.

Some examples of nil Lie algebras

Ivan P. Shestakov, Efim Zelmanov (2008)

Journal of the European Mathematical Society

Generalizing Petrogradsky’s construction, we give examples of infinite-dimensional nil Lie algebras of finite Gelfand–Kirillov dimension over any field of positive characteristic.

Sur l'algèbre de Lie des sections d'un fibré en algèbres de Lie

Pierre Lecomte (1980)

Annales de l'institut Fourier

On étudie la structure naturelle d’algèbre de Lie de l’espace des sections de classe C k d’un fibré localement trivial dont la fibre-type est une algèbre de Lie L ; on décrit, en particulier, ses dérivations et ses automorphismes. On détermine les algèbres de Lie L pour lesquelles cette structure caractérise la structure différentiable de la base du fibré.

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