Contents of Volume 3, Number 4

All articles in this issue are freely accessible.

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The $Π^{1}_{2}$-singleton conjecture

Sy D. Friedman.
J. Amer. Math. Soc. 3 (1990), 771-791
Abstract, references and article information
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MathSciNet review: 1071116

Common range of co-analytic Toeplitz operators

John E. McCarthy.
J. Amer. Math. Soc. 3 (1990), 793-799
Abstract, references and article information
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MathSciNet review: 1065054

A separator theorem for nonplanar graphs

Noga Alon, Paul Seymour and Robin Thomas.
J. Amer. Math. Soc. 3 (1990), 801-808
Abstract, references and article information
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MathSciNet review: 1065053

Embeddability for three-dimensional CR-manifolds

Daniel M. Burns and Charles L. Epstein.
J. Amer. Math. Soc. 3 (1990), 809-841
Abstract, references and article information
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MathSciNet review: 1071115

Uniform tree lattices

Hyman Bass and Ravi Kulkarni.
J. Amer. Math. Soc. 3 (1990), 843-902
Abstract, references and article information
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MathSciNet review: 1065928

A Glimm-Effros dichotomy for Borel equivalence relations

L. A. Harrington, A. S. Kechris and A. Louveau.
J. Amer. Math. Soc. 3 (1990), 903-928
Abstract, references and article information
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MathSciNet review: 1057041

Group representations and lattices

Benedict H. Gross.
J. Amer. Math. Soc. 3 (1990), 929-960
Abstract, references and article information
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MathSciNet review: 1071117

Lattices of minimal covolume in $SL_{2}$: a non-Archimedean analogue of Siegel’s theorem $𝜇≥𝜋/21$

Alexander Lubotzky.
J. Amer. Math. Soc. 3 (1990), 961-975
Abstract, references and article information
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MathSciNet review: 1070003