• Kyungpook Mathematical Journal
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• 제56권3호
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• pp.993-1002
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• 2016

In this paper we give some non-existence theorems for parallel normal Jacobi operator of real hypersurfaces in real, complex and quaternionic space forms, respectively.

• Kyungpook Mathematical Journal
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• 제59권4호
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• pp.771-781
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• 2019

In this paper, we consider biharmonic submanifolds of a quaternionic space form. We give the necessary and sufficient conditions for a submanifold to be biharmonic in a quaternionic space form, we study different particular cases for which we obtain some non-existence results and curvature estimates.

• Kyungpook Mathematical Journal
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• 제45권3호
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• pp.363-394
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• 2005

In this expository paper we survey basic results on isotropic immersions.

• Kyungpook Mathematical Journal
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• 제24권2호
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• pp.115-125
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• 1984