Abstract
We investigate the geometry and topology of submanifolds under a sharp pinching condition involving extrinsic invariants like the mean curvature and the length of the second fundamental form. Homology vanishing results are given that strengthen and sharpen previous ones. In addition, an integral bound is provided for the Bochner operator of compact Euclidean submanifolds in terms of the Betti numbers.
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Onti, CR., Vlachos, T. Homology Vanishing Theorems for Pinched Submanifolds. J Geom Anal 32, 294 (2022). https://doi.org/10.1007/s12220-022-01032-9
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DOI: https://doi.org/10.1007/s12220-022-01032-9
Keywords
- Bochner operator
- Betti numbers
- Homology groups
- Pinching
- Mean curvature
- Length of the second fundamental form