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Does there exist a generic projective hedgehog without any swallowtail in \(\mathbb {R}^{3} \) ? Such a hedgehog would be a model of the real projective plane parametrized by its Gauss map. See Sects. 2.2.2 and 2.6.3 , and Sect. 10.2 . Note that this problem as a discrete counterpart: see Sect. 2.6.3 .

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List of Selected Problems

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  • 发表日期：

    2026年

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  • Yves Martinez-Maure

摘要

Does there exist a generic projective hedgehog without any swallowtail in \(\mathbb {R}^{3} \) ? Such a hedgehog would be a model of the real projective plane parametrized by its Gauss map. See Sects. 2.2.2 and 2.6.3 , and Sect. 10.2 . Note that this problem as a discrete counterpart: see Sect. 2.6.3 .