Quaternionic geometry in dimension eight

Published 16 Oct 2016 in math.DG | (1610.04833v1)

Abstract: We describe the 8-dimensional Wolf spaces as cohomogeneity one SU(3)-manifolds, and discover perturbations of the quaternion-kaehler metric on the simply-connected 8-manifold G_2/SO(4) that carry a closed fundamental 4-form but are not Einstein.

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