A note on $2$-hypersurfaces of the nearly K\"ahlerian six-sphere

Ahmad Abu-Saleem ; Mihail B. Banaru ; Galina A. Banaru

Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica, no. 3 (2017), pp. 107-114.

Résumé

It is proved that hypersurfaces with type number two in a nearly Kählerian sphere $S^6$ admit almost contact metric structures of cosymplectic type that are non-cosymplectic.

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