## Tensor fields of type $$(0,2)$$ on the tangent bundle of a Riemannian manifold.(English)Zbl 0921.53013

The authors associate a global matrix function to every $$(0,2)$$-tensor field on the tangent bundle TM of a Riemannian manifold $$M$$. This enables them to characterize, in an original way, the natural $$(0,2)$$-tensor fields on $$M$$ constructed by O. Kowalski and M. Sekizawa [Bull. Tokyo Gakugei Univ., Sect. IV, Ser. Math. Nat. Sci. 40, 1-29 (1988; Zbl 0656.53021)] and J. Janyška [Suppl. Rend. Circ. Mat. Palermo, II. Ser. 32, 165-174 (1994; Zbl 0818.53020)].
Reviewer: I.Kolář (Brno)

### MSC:

 53C20 Global Riemannian geometry, including pinching 53B21 Methods of local Riemannian geometry 53A55 Differential invariants (local theory), geometric objects

### Citations:

Zbl 0656.53021; Zbl 0818.53020
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