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Proyecciones (Antofagasta)

versión impresa ISSN 0716-0917

Resumen

ARENAS, Manuel  y  LABRA, Alicia. Birrepresentations in a locally nilpotent variety. Proyecciones (Antofagasta) [online]. 2014, vol.33, n.1, pp.123-132. ISSN 0716-0917.  http://dx.doi.org/10.4067/S0716-09172014000100009.

It is known that commutative algebras satisfying the identity of degree four ((yx)x)x + γ((xx)x) = 0, with γ in the field and γ ≠ —1 are locally nilpotent. In this paper we study the birrepresentations of an algebra A that belongs to a variety ν of locally nilpotent algebras. We prove that if the split null extension of a birrepresentation of an algebra A ∈ ν by a vector space M is locally nilpotent, then it is trivial or reducible. As corollaries we get that if A is finitely generated, then every birrepresentation is trivial or reducible and that every finite-dimensional birrepresentation is equivalent to a birrepre-sentation consisting of strictly upper triangular matrices. We also prove that the multiplicative universal envelope of a finitely generated algebra in V is nilpotent, therefore it is finite-dimensional.

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