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arXiv · 2610.10325

Some vanishing theorems on $(p,q)$ double form and curvature operator of the second kind

Hai-Ping Fu·Yao Lu
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Abstract

We establish a Bochner formula for double forms in terms of the curvature operator of the second kind. As an application, we prove that a complete Riemannian manifold of dimension $n \ge 4$ with harmonic Weyl tensor and $\frac{3(n-1)}{4}$-nonnegative curvature operator of the second kind is either globally conformally equivalent to a space of positive constant curvature or is isometric to a flat manifold. We prove vanishing theorems for the Lichnérowicz Laplacian $Δ$ on $(p,q)$ double forms. These generalize recent results of Nienhaus-Petersen-Wink \cite{NPW23} and Dai-Fu-Lu-Yang \cite{DF24,DFY24,FL1,FLD}.

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Hai-Ping Fu, Yao Lu. 2026-10-07. Some vanishing theorems on $(p,q)$ double form and curvature operator of the second kind. https://arxiv.org/abs/2610.10325

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