Campoamor Stursberg, Otto-RudwigAncochea Bermúdez, José María2023-06-202023-06-2020010092-787210.1081/AGB-5017https://hdl.handle.net/20.500.14352/57186We classify the (n − 5)-filiform Lie algebras which have the additional property of a non-abelian derived subalgebra. Moreover we show that if a (n − 5)-filiform Lie algebra is characteristically nilpotent, then it must be 2-abelian.engjournal articlehttps//doi.org/10.1081/AGB-5017http://www.tandfonline.com/doi/pdf/10.1081/AGB-5017restricted access512.554.3Filiform Lie algebraNilpotent Lie algebraDerivationCharacteristicallySolvableNilpotent Lie algebrasStructure theory of Lie algebrasAutomorphisms and other operators on Lie algebras nilpotent algebraÁlgebra1201 Álgebra