Contents of Volume 25, Number 3

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Nonnegative polynomials and sums of squares

Grigoriy Blekherman.
J. Amer. Math. Soc. 25 (2012), 617-635
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Lyapunov exponents, periodic orbits, and horseshoes for semiflows on Hilbert spaces

Zeng Lian and Lai-Sang Young.
J. Amer. Math. Soc. 25 (2012), 637-665
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Microscopic derivation of Ginzburg-Landau theory

Rupert L. Frank, Christian Hainzl, Robert Seiringer and Jan Philip Solovej.
J. Amer. Math. Soc. 25 (2012), 667-713
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$p$-adic periods and derived de Rham cohomology

A. Beilinson.
J. Amer. Math. Soc. 25 (2012), 715-738
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A generalization of Steinberg’s cross section

Xuhua He and George Lusztig.
J. Amer. Math. Soc. 25 (2012), 739-757
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The Vlasov-Poisson-Landau system in a periodic box

Yan Guo.
J. Amer. Math. Soc. 25 (2012), 759-812
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A finiteness property of abelian varieties with potentially ordinary good reduction

Haruzo Hida.
J. Amer. Math. Soc. 25 (2012), 813-826
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Regularity and free boundary regularity for the $p$-Laplace operator in Reifenberg flat and Ahlfors regular domains

John L. Lewis and Kaj Nyström.
J. Amer. Math. Soc. 25 (2012), 827-862
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Rational surfaces with a large group of automorphisms

Serge Cantat and Igor Dolgachev.
J. Amer. Math. Soc. 25 (2012), 863-905
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Milnor numbers of projective hypersurfaces and the chromatic polynomial of graphs

June Huh.
J. Amer. Math. Soc. 25 (2012), 907-927
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