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Poisson and near-symplectic structures on generalized wrinkled fibrations in dimension 6

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Abstract

We show that generalized broken fibrations in arbitrary dimensions admit rank-2 Poisson structures compatible with the fibration structure. After extending the notion of wrinkled fibration to dimension 6, we prove that these wrinkled fibrations also admit compatible rank-2 Poisson structures. In the cases with indefinite singularities, we can provide these wrinkled fibrations in dimension 6 with near-symplectic structures.

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Acknowledgements

We warmly thank Yankı Lekili for answering detailed questions about his paper. His explanations allowed us to complete our computations for the near-symplectic forms. We also thank Alan Weinstein for commenting on an early version of this paper. PSS thanks DGAPA PAPIIT-UNAM IN102716 and The University of California Institute for Mexico and the United States (UC MEXUS) Grant CN-16-43, the organizers of the meeting ’Gone fishing 2016’ in Boulder, and IPAM in UCLA where some of this work was done. RV thanks UNAM-DGAPA and the partial support by the FWO under EOS project G0H4518N. JTO thanks support from CONACyT Project CB2016/283960.

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Suárez-Serrato, P., Torres Orozco, J. & Vera, R. Poisson and near-symplectic structures on generalized wrinkled fibrations in dimension 6. Ann Glob Anal Geom 55, 777–804 (2019). https://doi.org/10.1007/s10455-019-09651-2

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