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The classification of ERP G2-structures on Lie groups
Published 23 Sep 2019 in math.DG | (1909.10620v2)
Abstract: A complete classification of left-invariant closed G2-structures on Lie groups which are extremally Ricci pinched, up to equivalence and scaling, is obtained. There are five of them, they are defined on five different completely solvable Lie groups and the G2-structure is exact in all cases except one, given by the only example in which the Lie group is unimodular.
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