Canadian Mathematical Society
  location:  Publicationsjournals
Search results

Search: MSC category 17B05 ( Structure theory )

  Expand all        Collapse all Results 1 - 3 of 3

1. CMB Online first

Leandro, Cagliero; Szechtman, Fernando
Jordan-Chevalley decomposition in Lie algebras
We prove that if $\mathfrak{s}$ is a solvable Lie algebra of matrices over a field of characteristic 0, and $A\in\mathfrak{s}$, then the semisimple and nilpotent summands of the Jordan-Chevalley decomposition of $A$ belong to $\mathfrak{s}$ if and only if there exist $S,N\in\mathfrak{s}$, $S$ is semisimple, $N$ is nilpotent (not necessarily $[S,N]=0$) such that $A=S+N$.

Keywords:solvable Lie algebra, Jordan-Chevalley decomposition, representation
Categories:17-08, 17B05, 20C40, 15A21

2. CMB 2008 (vol 51 pp. 298)

Tocón, Maribel
The Kostrikin Radical and the Invariance of the Core of Reduced Extended Affine Lie Algebras
In this paper we prove that the Kostrikin radical of an extended affine Lie algebra of reduced type coincides with the center of its core, and use this characterization to get a type-free description of the core of such algebras. As a consequence we get that the core of an extended affine Lie algebra of reduced type is invariant under the automorphisms of the algebra.

Keywords:extended affine Lie algebra, Lie torus, core, Kostrikin radical
Categories:17B05, 17B65

3. CMB 2002 (vol 45 pp. 525)

Berman, Stephen; Morita, Jun; Yoshii, Yoji
Some Factorizations in Universal Enveloping Algebras of Three Dimensional Lie Algebras and Generalizations
We introduce the notion of Lie algebras with plus-minus pairs as well as regular plus-minus pairs. These notions deal with certain factorizations in universal enveloping algebras. We show that many important Lie algebras have such pairs and we classify, and give a full treatment of, the three dimensional Lie algebras with plus-minus pairs.

Categories:17B05, 17B35, 17B67, 17B70

© Canadian Mathematical Society, 2019 :