63 research outputs found
Group gradings on finitary simple Lie algebras
We classify, up to isomorphism, all gradings by an arbitrary abelian group on
simple finitary Lie algebras of linear transformations (special linear,
orthogonal and symplectic) on infinite-dimensional vector spaces over an
algebraically closed field of characteristic different from 2.Comment: Several typographical errors have been correcte
Gradings on simple algebras of finitary matrices
We describe gradings by finite abelian groups on the associative algebras of
infinite matrices with finitely many nonzero entries, over an algebraically
closed field of characteristic zero
Gradings, Braidings, Representations, Paraparticles: some open problems
A long-term research proposal on the algebraic structure, the representations
and the possible applications of paraparticle algebras is structured in three
modules: The first part stems from an attempt to classify the inequivalent
gradings and braided group structures present in the various parastatistical
algebraic models. The second part of the proposal aims at refining and
utilizing a previously published methodology for the study of the Fock-like
representations of the parabosonic algebra, in such a way that it can also be
directly applied to the other parastatistics algebras. Finally, in the third
part, a couple of Hamiltonians is proposed, and their sutability for modeling
the radiation matter interaction via a parastatistical algebraic model is
discussed.Comment: 25 pages, some typos correcte
Classification of group gradings on simple Lie algebras of types A, B, C and D
For a given abelian group G, we classify the isomorphism classes of
G-gradings on the simple Lie algebras of types A_n (n >= 1), B_n (n >= 2), C_n
(n >= 3) and D_n (n > 4), in terms of numerical and group-theoretical
invariants. The ground field is assumed to be algebraically closed of
characteristic different from 2.Comment: 20 pages, no figure
Non-Associative Algebraic Structures: Classification and Structure
These are detailed notes for a lecture on "Non-associative Algebraic
Structures: Classification and Structure" which I presented as a part of my
Agrega\c{c}\~ao em Matem\'atica e Applica\c{c}\~oes (University of Beira
Interior, Covilh\~a, Portugal, 13-14/03/2023)
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