Boundary value problems in dimensions seven, four and three related to exceptional holonomy
classification
🧮 math.DG
keywords
boundarydimensionsproblemvalueadmitsdetaildimensionaldual
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In the paper we introduce a boundary value problem for a G_{2} structure on a 7-manifold with boundary, with prescribed 3-form on the boundary. We make some general observations about this problem and then study in more detail reductions to 4 and 3 dimensions by imposing symmetry. The 3-dimensional reduction admits a dual variational formulation in terms of solutions of the real Monge-Ampere equation
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