
handle: 11570/1606839
Summary: If \(dp\) denotes the soldering form of a differentiable \(C^\infty\) manifold (i.e. the canonical vector valued 1-form) and \(\nabla\) the covariant differential operators, then a TF may be defined as \[ \nabla{\mathcal T}=sdp+\omega{\mathcal T},\quad s\in \Lambda^0M \] where \(\omega\in\Lambda^1M\) is the associated Pfaffian with \(\mathcal T\). It is shown that if the a vector field \(W= \omega^\sharp\) of a torse forming vector field (TF) is a skew symmetric Killing vector field, then the TF is an exterior concurrent vector field. Further the existence of an horizontal TF on a Kenmotsu manifold (\(\omega K\)-manifold) \(M (\varphi, \Omega, \eta,\xi,g)\) [\textit{I. Mihai, R. Rosca} and \textit{L. Verstraelen}, Some aspects of the differential geometry of vector fields, Kath. Univ. Leuven, Kath. Univ. Brussels, Padge 2 (1996; Zbl 0960.53019)] is proved by considering a closed differential system. If \({\mathcal T}_1\) and \({\mathcal T}_2\) are two such TF having both the same structure 1-form \(\eta\) as associated Pfaffian, it is proved that \(M\) is foliated by surfaces tangent to \({\mathcal T}_1\) and \({\mathcal T}_2\). Other properties of torse forming vector fields are also discussed.
torse forming vector field, soldering form, Special Riemannian manifolds (Einstein, Sasakian, etc.), foliation, Killing vector field, soldering form, torse forming vector field, Kenmotsu manifold, concurrent vector field, foliation., concurrent vector field, Kenmotsu manifold, Killing vector field
torse forming vector field, soldering form, Special Riemannian manifolds (Einstein, Sasakian, etc.), foliation, Killing vector field, soldering form, torse forming vector field, Kenmotsu manifold, concurrent vector field, foliation., concurrent vector field, Kenmotsu manifold, Killing vector field
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