A Riemannian manifold with skew-circulant structures and an associated locally conformal K\"{a} hler manifold

D Razpopov, I Dokuzova - arXiv preprint arXiv:2007.03386, 2020 - arxiv.org
A 4-dimensional Riemannian manifold M, equipped with an additional tensor structure S,
whose fourth power is minus identity, is considered. The structure S has a skew-circulant …

[PDF][PDF] A work done by an isotropic vector force field along an isotropic curve

D Razpopov, G Dzhelepov - Balkan Journal of Geometry and Its …, 2021 - au-plovdiv.bg
We consider a 4-dimensional Riemannian manifold M with a metric g and an endomorphism
Q, whose fourth power is the identity and Q acts as an isometry on g. An associated metric g …

Four-dimensional Riemannian product manifolds with circulant structures

I Dokuzova - arXiv preprint arXiv:1904.09424, 2019 - arxiv.org
A 4-dimensional Riemannian manifold equipped with an additional tensor structure, whose
fourth power is the identity, is considered. This structure has a circulant matrix with respect to …