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math.RA2008
C-Ideals of Lie Algebras
David A. Towers
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 contained in…
math.RA2008
On Semi-Modular Subalgebras of Lie Algebras Over Fields of Arbitrary Characteristic
David A. Towers
This paper is a further contribution to the extensive study by a number of authors of the subalgebra lattice of a Lie algebra. It is shown that, in certain circumstances, including…