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In mathematics, a Lie bialgebra is the Lie-theoretic case of a bialgebra: it is a set with a Lie algebra and a Lie coalgebra structure which are compatible. It is a bialgebra where the multiplication is skew-symmetric and satisfies a dual Jacobi identity, so that the dual vector space is a Lie algebra, whereas the comultiplication is a 1-, so that the multiplication and comultiplication are compatible. The cocycle condition implies that, in practice, one studies only classes of bialgebras that are cohomologous to a Lie bialgebra on a coboundary.

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  • Biálgebra de Lie (es)
  • Lie bialgebra (en)
  • 李雙代數 (zh)
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  • 李雙代數(Lie bialgebra)是一種代數結構,比一般李代數精細一倍:它本体是李代數,它的對偶空間也是李代數,且兩種結構相容。李雙代數是泊松李群(Poisson-Lie group)的李代數(即可以當作是無限小的柏松-李變換)。 (zh)
  • En matemáticas, una biálgebra de Lie es un caso de biálgebra en la teoría de Lie, es decir, un conjunto con estructuras de álgebra de Lie y compatibles. Es una biálgebra donde la es antisimétrica y satisface una identidad de Jacobi dual, de forma que el espacio vectorial dual es un álgebra de Lie, al mismo tiempo que la comultiplicación es un 1-, de forma que la multiplicación y la comultiplicación son compatibles. La condición de cociclo implica que, en la práctica, se estudian únicamente clases de biálgebras que son cohomólogas a una biálgebra de Lie en un . (es)
  • In mathematics, a Lie bialgebra is the Lie-theoretic case of a bialgebra: it is a set with a Lie algebra and a Lie coalgebra structure which are compatible. It is a bialgebra where the multiplication is skew-symmetric and satisfies a dual Jacobi identity, so that the dual vector space is a Lie algebra, whereas the comultiplication is a 1-, so that the multiplication and comultiplication are compatible. The cocycle condition implies that, in practice, one studies only classes of bialgebras that are cohomologous to a Lie bialgebra on a coboundary. (en)
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  • En matemáticas, una biálgebra de Lie es un caso de biálgebra en la teoría de Lie, es decir, un conjunto con estructuras de álgebra de Lie y compatibles. Es una biálgebra donde la es antisimétrica y satisface una identidad de Jacobi dual, de forma que el espacio vectorial dual es un álgebra de Lie, al mismo tiempo que la comultiplicación es un 1-, de forma que la multiplicación y la comultiplicación son compatibles. La condición de cociclo implica que, en la práctica, se estudian únicamente clases de biálgebras que son cohomólogas a una biálgebra de Lie en un . Se conocen también como álgebras de Poisson-Hopf, y son el álgebra de Lie de un . Las biálgebras de Lie aparecen de forma natural en el estudio de las . (es)
  • In mathematics, a Lie bialgebra is the Lie-theoretic case of a bialgebra: it is a set with a Lie algebra and a Lie coalgebra structure which are compatible. It is a bialgebra where the multiplication is skew-symmetric and satisfies a dual Jacobi identity, so that the dual vector space is a Lie algebra, whereas the comultiplication is a 1-, so that the multiplication and comultiplication are compatible. The cocycle condition implies that, in practice, one studies only classes of bialgebras that are cohomologous to a Lie bialgebra on a coboundary. They are also called Poisson-Hopf algebras, and are the Lie algebra of a Poisson–Lie group. Lie bialgebras occur naturally in the study of the Yang–Baxter equations. (en)
  • 李雙代數(Lie bialgebra)是一種代數結構,比一般李代數精細一倍:它本体是李代數,它的對偶空間也是李代數,且兩種結構相容。李雙代數是泊松李群(Poisson-Lie group)的李代數(即可以當作是無限小的柏松-李變換)。 (zh)
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