Intersections of maximal subalgebras in Lie algebras (Q1085258)

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scientific article; zbMATH DE number 3981390
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Intersections of maximal subalgebras in Lie algebras
scientific article; zbMATH DE number 3981390

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    Intersections of maximal subalgebras in Lie algebras (English)
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    1987
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    An element A of a lattice with 1 is called a coatom if 1 covers A. A lattice is called coatomistic if each of its elements is an intersection of a set of coatoms. The main result is: Theorem. A finite-dimensional Lie algebra L over a field of characteristic 0 has a coatomistic subalgebra lattice if and only if L is abelian or almost abelian or three-dimensional simple non-split.
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    coatom
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    finite-dimensional Lie algebra
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    coatomistic subalgebra lattice
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    abelian
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    almost abelian
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    three-dimensional simple non-split
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