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arXiv · 2602.22353

Non-trivial and Non-tautological Cohomology of Strata of Differentials

Dawei Chen·Prabhat Devkota·Samuel Grushevsky·Martin Möller
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Abstract

In this paper we construct various non-trivial and non-tautological cohomology classes on compactified and uncompactified strata of curves with a differential, by using the geometry of the boundary stratification of the moduli space of multi-scale differentials.

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Dawei Chen, Prabhat Devkota, Samuel Grushevsky, Martin Möller. 2026-02-25. Non-trivial and Non-tautological Cohomology of Strata of Differentials. https://arxiv.org/abs/2602.22353

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