Weak c-ideals of a Lie algebra


ÇİLOĞLU ŞAHİN Z. , Towers D. A.

TURKISH JOURNAL OF MATHEMATICS, 2021 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Publication Date: 2021
  • Doi Number: 10.3906/mat-2006-55
  • Title of Journal : TURKISH JOURNAL OF MATHEMATICS
  • Keywords: Weak c-ideal, Frattini ideal, Lie algebras, nilpotent, solvable, supersolvable, NORMAL SUBGROUPS, FINITE-GROUPS

Abstract

A subalgebra B of a Lie algebra L is called a weak c-ideal of L if there is a subideal C of L such that L = B+C and B boolean AND C <= B-L where B-L is the largest ideal of L contained in B. This is analogous to the concept of weakly c-normal subgroups, which has been studied by a number of authors. We obtain some properties of weak c-ideals and use them to give some characterisations of solvable and supersolvable Lie algebras. We also note that one-dimensional weak c-ideals are c-ideals.