Geodesic
On almost contact metric hypersurfaces with type number~1 in $6$-dimensional K\"ahlerian submanifolds of Cayley algebra
Izvestiâ vysših učebnyh zavedenij. Matematika, no. 10 (2014), pp. 13-18.

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We prove that for an almost contact metric hypersurface of a six-dimensional Kählerian submanifold of Cayley algebra the condition for the type number to be equal to 0 or 1 is not only necessary but sufficient for this almost contact metric structure to be cosymplectic.
Keywords: almost contact metric structure, cosymplectic structure, type number, six-dimensional Kählerian submanifold of Cayley algebra.
Mots-clés : hypersurface 
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M. B. Banaru. On almost contact metric hypersurfaces with type number~1 in $6$-dimensional K\"ahlerian submanifolds of Cayley algebra. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 10 (2014), pp. 13-18. http://geodesic.mathdoc.fr/item/IVM_2014_10_a1/

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