On some affine connections on manifolds with almost contact 3-structure
Given an almost contact structure \((\varphi,\xi,\eta)\) on a manifold \(M\), the author introduces the concept of \((\varphi,\xi, \eta)\)-affine connection on \(M\). Then he determines all these connections and describes their transformation groups. Further he discusses the same problem for the almost contact 3-structures.
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