Hypersurfaces with constant mean curvature and two principal curvatures in n+1

Hypersurfaces with constant mean curvature and two principal curvatures in n+1

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In this paper we consider compact oriented hypersurfaces M with constant mean curvature and two principal curvatures immersed in the Euclidean ugg ultra mini grade school sphere.In the minimal case, Perdomo (Perdomo 2004) andWang (Wang 2003) obtained an integral inequality involving the square of the norm of the second fundamental form of M, where equality holds only if M is the Clifford torus.In this paper, using the traceless second fundamental form of thread feathers cabernet M, we extend the above integral formula to hypersurfaces with constant mean curvature and give a new characterization of the H(r)-torus.