In this paper, an explicit construction of a countable parafree Lie algebra with nonzero second homology is given. It is also shown that the cohomological dimension of the pronilpotent completion of a free noncyclic finitely generated Lie algebra over Z is greater than two. Moreover, it is proven that there exists a countable parafree group with nontrivial H2.

Translated title of the contributionГомологические свойства парасвободных алгебр
Original languageEnglish
Pages (from-to)1092-1106
Number of pages15
JournalJournal of Algebra
Volume560
Early online date8 Jun 2020
DOIs
StatePublished - 15 Oct 2020

    Scopus subject areas

  • Algebra and Number Theory

    Research areas

  • Combinatorial group theory, Group homology, Lie algebras, Parafree conjecture, RELATIVELY FREE GROUP, LOWER CENTRAL SEQUENCE

ID: 62108012