(para)-K\"ahler Weyl structures

P. Gilkey; S. Nikcevic

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arXiv · 1204.0724

(para)-K\"ahler Weyl structures

P. Gilkey·S. Nikcevic

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Abstract

We work in both the complex and in the para-complex categories and examine (para)-K\"ahler Weyl structures in both the geometric and in the algebraic settings. The higher dimensional setting is quite restrictive. We show that any (para)-Kaehler Weyl algebraic curvature tensor is in fact Riemannian in dimension at least 6; this yields as a geometric consequence that any (para)-Kaehler Weyl geometric structure is trivial if the dimension is at least 6. By contrast, the 4 dimensional setting is, as always, rather special as it turns out that there are (para)-Kaehler Weyl algebraic curvature tensors which are not Riemannian in dimension 4. Since every (para)-Kaehler Weyl algebraic curvature tensor is geometrically realizable and since every 4 dimensional Hermitian manifold admits a unique (para)-Kaehler Weyl structure, there are also non-trivial 4 dimensional Hermitian (para)-Kaehler Weyl manifolds.

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BibTeX RIS

P. Gilkey, S. Nikcevic. 2012-04-03. (para)-K\"ahler Weyl structures. https://arxiv.org/abs/1204.0724

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