Let K be a field of characteristic zero, g be a finite dimensional K-Lie algebra and let A be a finite dimensional associative and commutative K-algebra with unit. We describe the structure of the Lie algebra of derivations ...

Si g es un álgebra de Lie, la cohomología H**(g) tiene una estructura de súper-álgebra de Poisson con producto asociativo súper-conmutativo V y un súper-corchete de Lie {-,-} que se compatibiliza con el producto \vee en ...

We describe the structure of the cohomology of the filiform Lie algebras Ln and Qn as a module over their (2-dimensional) torus of derivations. Our approach relies on the fact that both filiform algebras have an ideal h ...

We describe the structure of the cohomology of the filiform Lie algebras and as a module over their (2-dimensional) torus of derivations. Our approach relies on the fact that both filiform algebras have an ideal of codimension ...

Let L be a Lie algebra and (..) be a derivation of L. The derivation (..) is non-singular if it is injective as linear transformation. By a well-known result of N. Jacobson, a Lie algebra of finite dimension over a field ...

El objeto de estudio de esta tesis es la variedad algebraica Ln, de todas las álgebras de Lie complejas de dimensión n y la subvariedad Nn de todas las álgebras de Lie nilpotentes en Ln. Para entender estas variedades se ...

From a Lie algebra g satisfying Z(g)=0 and Λ2(g)g=0 (in particular, for g semisimple) we describe explicitly all Lie bialgebra structures on extensions of the form L=g×K{double-struck} in terms of Lie bialgebra structures ...

En el caso homogéneo, el único comportamiento de curvatura que aún no se entiende es Ricci negativa y existe evidencia que una caracterización algebraica de grupos de Lie que admiten métricas invariantes a izquierda de ...