Abstract
We describe a local model for any singular Riemannian foliation in a neighborhood of a closed saturated submanifold of a singular stratum. Moreover, we construct a Lie groupoid that controls the transverse geometry of the linear approximation of the singular Riemannian foliation around these submanifolds. We also discuss the closure of this Lie groupoid and its Lie algebroid.
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The authors thank Fernando M. Escobosa, Ivo Terek and Leonardo F. Cavenaghi for their useful suggestions and to the anonymous referee for valuable comments.
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The first author was supported by grand \(\#\) 2016/23746-6, São Paulo Research Foundation (FAPESP). The second author was supported by CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico). The third author was supported by grant \(\#\) 2019/14777-3, São Paulo Research Foundation (FAPESP). The fourth author was supported by grant \(\#\) 2015/22059-2, São Paulo Research Foundation (FAPESP) and CNPq (307131/2016-5). In addition, this study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Brasil (CAPES)-Finance Code 001.
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Alexandrino, M.M., Inagaki, M.K., de Melo, M. et al. Lie groupoids and semi-local models of singular Riemannian foliations. Ann Glob Anal Geom 61, 593–619 (2022). https://doi.org/10.1007/s10455-021-09813-1
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DOI: https://doi.org/10.1007/s10455-021-09813-1