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Ends of the strata of differentials

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arxiv 2504.21756 v1 pith:DVU4NYPJ submitted 2025-04-30 math.GT math.AGmath.DS

classification math.GTmath.AGmath.DS
keywords differentialsendsformsstratabainbridge-chen-gendron-grushevsky-moellerboissyclassificationcomponents
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We enumerate the ends of each stratum of meromorphic 1-forms on Riemann surfaces with prescribed multiplicities of zeroes and poles. Our proof uses degeneration techniques based on the construction by Bainbridge-Chen-Gendron-Grushevsky-Moeller of the moduli space of multi-scale differentials, together with recent classification of connected components of generalized strata by Lee-Wong. In particular, from these results we quickly deduce the theorem for holomorphic 1-forms, originally proved by Boissy.

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