The restricted cohomological-dimension-one structure conjecture for Lie pp-algebras

Let LL be a Lie pp-algebra, and let cd(L)\operatorname{cd}_*(L) denote its restricted cohomological dimension. Let L\mathscr L be a free Lie pp-algebra, let T1,,TnT_1,\dots,T_n be finite-dimensional tori, and let each symbol \bowtie denote either \rtimes, the action of the left-hand side on the right-hand side, or \ltimes, the action of the right-hand side on the left-hand side. Thus an algebra of the displayed form is

(((LT1)T2))Tn.(\dots ((\mathscr L \bowtie T_1) \bowtie T_2) \dots ) \bowtie T_n.

Restricted cohomological-dimension-one structure conjecture. Any Lie pp-algebra LL with cd(L)=1\operatorname{cd}_*(L)=1 is of the form

(((LT1)T2))Tn.(\dots ((\mathscr L \bowtie T_1) \bowtie T_2) \dots ) \bowtie T_n.

The claim proposes a structural classification of Lie pp-algebras of restricted cohomological dimension one by iterated extensions of a free Lie pp-algebra by finite-dimensional tori. The supplied context gives the construction and motivation but does not state a resolution, so the conjecture is recorded as open.

Sources & referencesView supporting material

Primary source

Pasha Zusmanovich, “On Lie p-algebras of cohomological dimension one”, arXiv:1601.00352 (2019).

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