Abstract
In this paper we first introduce the full expression of the curvature tensor of a real hypersurface M in complex two-plane Grassmannians G2(Cm+2) from the equation of Gauss and derive a new formula for the Ricci tensor of M in G2(Cm+2). Finally we give a complete classification for Hopf real hypersurfaces in complex two-plane Grassmannians G2(Cm+2) with harmonic curvature or harmonic Weyl tensor.
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