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Deformations in \(G_{2}\) manifolds. (English) Zbl 1143.53047

The authors study deformations of associative submanifolds inside a \(G_2\) manifold \(M^7\) with a calibration 3-form \(\varphi\). In the present paper all cited results, as well as the new ones about \(G_2\) manifolds are proved by using only the cross product operation (equivalently \(\varphi\)). The approach in their paper makes things easier and keeps the presentation elementary.

MSC:

53C30 Differential geometry of homogeneous manifolds
53C10 \(G\)-structures

References:

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