Submanifolds with harmonic mean curvature vector field in contact 3-manifolds
Biharmonic or polyharmonic curves and surfaces in 3-dimensional contact manifolds are investigated.
Submanifolds with harmonic mean curvature in pseudo-Hermitian geometry
We classify Hopf cylinders with proper mean curvature vector field in Sasakian 3-manifolds with respect to the Tanaka-Webster connection.
Pseudo-symmetric contact 3-manifolds III
A trans-Sasakian 3-manifold is pseudo-symmetric if and only if it is η-Einstein. In particular, a quasi-Sasakian 3-manifold is pseudo-symmetric if and only if it is a coKähler manifold or a homothetic Sasakian manifold. Some examples of non-Sasakian pseudo-symmetric contact 3-manifolds are exhibited.
Surfaces with parallel second fundamental form in Bianchi-Cartan-Vranceanu spaces
We give a complete classification of surfaces with parallel second fundamental form in 3-dimensional Bianchi-Cartan-Vranceanu spaces.
Biharmonic curves in Minkowski 3-space.
Biharmonic curves in Minkowski 3-space. II.
Biminimal submanifolds in contact 3-manifolds.
Statistical structures on tangent bundles.
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