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Cited by 266

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The stable moduli space of Riemann surfaces: Mumford’s conjecture

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Madsen, Ib, Weiss, Michael·2007·Annals of Mathematics

Abstract

D. Mumford conjectured in [33] that the rational cohomology of the stable moduli space of Riemann surfaces is a polynomial algebra generated by certain classes κ i of dimension 2i.For the purpose of calculating rational cohomology, one may replace the stable moduli space of Riemann surfaces by BΓ ∞ , where Γ ∞ is the group of isotopy classes of automorphisms of a smooth oriented connected surface of "large" genus.Tillmann's theorem [44] that the plus construction makes BΓ ∞ into an infinite loop space led to a stable homotopy version of Mumford's conjecture, stronger than the original [24].We prove the stronger version, relying on Harer's stability theorem [17], Vassiliev's theorem concerning spaces of functions with moderate singularities [46], [45] and methods from homotopy theory.

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Metadata

Authors
Madsen, I., & Weiss, M.
Venue
Annals of Mathematics
Published
2007-05-01
Volume
165
Issue
3
Pages
843-941
ISSN
0003-486X (ISSN-L)
OpenAlex
W2164439626
Cited by
266
References
29
FWCI
27.69
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: The stable moduli space of Riemann surfaces: Mumford’s conjecture. https://app.cochat.ai/papers/10.4007/annals.2007.165.843
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Madsen, I., & Weiss, M. (2007). The stable moduli space of Riemann surfaces: Mumford’s conjecture. Annals of Mathematics. https://doi.org/10.4007/annals.2007.165.843

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