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Lifts of maps to frame bundles https://arxiv.org/abs/2412.19891 #mathDG

Lifts of maps to frame bundles

Let $(M,g)$ be a Riemannian manifold, $L(M)$ be its frame bundle, $O(M)$ its orthonormal frame bundle. For a distribution $D$ on $M$ we define a subbundle $L(D)\subset L(M)$ or $O(D)\subset O(M)$ in a natural way. This allows us to consider a lift $Lφ$ of a map $φ:M\to N$ not necessarily being a local diffeomorphism. More precisely, if $φ:M\to N$ is a submersion, then $Lφ:L(\mathcal{H}^φ)\to L(N)$ or $Lφ:O(\mathcal{H}^φ)\to L(N)$, where $\mathcal{H}^φ$ is a horizontal distribution of $φ$. Equipping $L(M)$ and $L(N)$ with the Mok metrics, we study conformality and harmonicity of lifts $Lφ$.

arXiv.org
January 1, 2025 at 3:10 AM · · feed2toot · 0 · 0 · 0
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