Hyperspheres in Euclidean and Minkowski 4-spaces as almost paracontact almost paracomplex Riemannian manifolds

@article{Manev2020HyperspheresIE,
  title={Hyperspheres in Euclidean and Minkowski 4-spaces
as almost paracontact almost paracomplex Riemannian manifolds},
  author={M. Manev and Veselina Tavkova},
  journal={Novi Sad Journal of Mathematics},
  year={2020}
}
Almost paracontact almost paracomplex Riemannian manifolds of the lowest dimension are studied. Such structures are constructed on hyperspheres in 4-dimensional spaces, Euclidean and pseudo-Euclidean, respectively. The obtained manifolds are studied and characterised in terms of the classification used and their geometric properties. 

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Bulgaria Email address: mmanev@uni-plovdiv.bg Email address: vtavkova@uni-plovdiv.bg (MM2) Department of Medical Informatics, Biostatistics and E-Learning, Faculty of Public Health
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