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arXiv · 0811.2689

C-Ideals of Lie Algebras

David A. Towers
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Abstract

A subalgebra B of a Lie algebra L is called a c-ideal of L if there is an ideal C of L such that L = B + C and B \cap C \leq B_L, where B_L is the largest ideal of $L$ contained in B. This is analogous to the concept of c-normal subgroup, which has been studied by a number of authors. We obtain some properties of c-ideals and use them to give some characterisations of solvable and supersolvable Lie algebras. We also classify those Lie algebras in which every one-dimensional subalgebra is a c-ideal.

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David A. Towers. 2008-11-17. C-Ideals of Lie Algebras. https://arxiv.org/abs/0811.2689

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