Abstract
In this paper we obtain the realizations of some infinite-dimensional Lie algebras, named “conformal current-type Lie algebras,” in terms of a two-dimensional Novikov algebra and its deformations. Furthermore, Ovsienko and Roger’s loop cotangent Virasoro algebra, which can be regarded as a nice generalization of the Virasoro algebra with two space variables, is naturally realized as an affinization of the tensor product of a deformation of the two-dimensional Novikov algebra and the Laurent polynomial algebra. These realizations shed new light on various aspects of the structure and representation theory of the corresponding infinite-dimensional Lie algebras.
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