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Displaying similar documents to “Lorentz invariant distributions supported on the forward light cone”

Classification of irreducible weight modules

Olivier Mathieu (2000)

Annales de l'institut Fourier

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Let 𝔤 be a reductive Lie algebra and let 𝔥 be a Cartan subalgebra. A 𝔤 -module M is called a if and only if M = ⊕ λ M λ , where each weight space M λ is finite dimensional. The main result of the paper is the classification of all simple weight 𝔤 -modules. Further, we show that their characters can be deduced from characters of simple modules in category 𝒪 .

On extendability of invariant distributions

Bogdan Ziemian (2000)

Annales Polonici Mathematici

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In this paper sufficient conditions are given in order that every distribution invariant under a Lie group extend from the set of orbits of maximal dimension to the whole of the space. It is shown that these conditions are satisfied for the n-point action of the pure Lorentz group and for a standard action of the Lorentz group of arbitrary signature.