Abstract
We define the axiom of indefinite hemi-slant 3-planes and 3-spheres for an indefinite almost Hermitian manifold with lightlike submanifolds. We prove that if an indefinite Kaehler manifold satisfies the axioms of indefinite hemi-slant 3-planes and 3-spheres for some slant angle θ ∈ (0, π/2) then it is an indefinite complex space form.
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Submitted by M. A.Malakhaltsev
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Sachdeva, R., Kumar, R. & Bhatia, S.S. The axioms of indefinite hemi-slant planes and spheres. Lobachevskii J Math 38, 125–130 (2017). https://doi.org/10.1134/S1995080217010188
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DOI: https://doi.org/10.1134/S1995080217010188