Contents of Volume 33, Number 4

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Tame topology of arithmetic quotients and algebraicity of Hodge loci

B. Bakker, B. Klingler and J. Tsimerman.
J. Amer. Math. Soc. 33 (2020), 917-939
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Large genus asymptotics for volumes of strata of abelian differentials

Amol Aggarwal; with an appendix by Anton Zorich.
J. Amer. Math. Soc. 33 (2020), 941-989
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Examples of compact Einstein four-manifolds with negative curvature

Joel Fine and Bruno Premoselli.
J. Amer. Math. Soc. 33 (2020), 991-1038
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Billiards, quadrilaterals, and moduli spaces

Alex Eskin, Curtis T. McMullen, Ronen E. Mukamel and Alex Wright.
J. Amer. Math. Soc. 33 (2020), 1039-1086
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Bounds on $2$-torsion in class groups of number fields and integral points on elliptic curves

M. Bhargava, A. Shankar, T. Taniguchi, F. Thorne, J. Tsimerman and Y. Zhao.
J. Amer. Math. Soc. 33 (2020), 1087-1099
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Nonuniqueness and mean-field criticality for percolation on nonunimodular transitive graphs

Tom Hutchcroft.
J. Amer. Math. Soc. 33 (2020), 1101-1165
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Virtual homological spectral radii for automorphisms of surfaces

Yi Liu.
J. Amer. Math. Soc. 33 (2020), 1167-1227
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