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Bulletin of the American Mathematical Society

The Bulletin publishes expository articles on contemporary mathematical research, written in a way that gives insight to mathematicians who may not be experts in the particular topic. The Bulletin also publishes reviews of selected books in mathematics and short articles in the Mathematical Perspectives section, both by invitation only.

ISSN 1088-9485 (online) ISSN 0273-0979 (print)

The 2020 MCQ for Bulletin of the American Mathematical Society is 0.84.

What is MCQ? The Mathematical Citation Quotient (MCQ) measures journal impact by looking at citations over a five-year period. Subscribers to MathSciNet may click through for more detailed information.

 

Contents of Volume 56, Number 2
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The threshold theorem for the $(4+1)$-dimensional Yang–Mills equation: An overview of the proof
Sung-Jin Oh and Daniel Tataru PDF
Bull. Amer. Math. Soc. 56 (2019), 171-210
Differentiability versus continuity: Restriction and extension theorems and monstrous examples
Krzysztof C. Ciesielski and Juan B. Seoane-Sepúlveda PDF
Bull. Amer. Math. Soc. 56 (2019), 211-260
Analytic $L$-functions: Definitions, theorems, and connections
David W. Farmer, Ameya Pitale, Nathan C. Ryan and Ralf Schmidt PDF
Bull. Amer. Math. Soc. 56 (2019), 261-280
On Milnor’s fibration theorem and its offspring after 50 years
José Seade PDF
Bull. Amer. Math. Soc. 56 (2019), 281-348

Mathematical Perspectives


About the cover: Early American arithmetics
Gerald L. Alexanderson and Leonard F. Klosinski PDF
Bull. Amer. Math. Soc. 56 (2019), 349-353
Selections Reprinted from Mathematical Reviews
Review information PDF
Bull. Amer. Math. Soc. 56 (2019), 355-359

Book Reviews
Book reviews do not contain an abstract. You may download each review in this issue using the links below.

Expansion in finite simple groups of Lie type, by Terence Tao.
Reviewer: Alexander Lubotzky
Review information PDF
Bull. Amer. Math. Soc. 56 (2019), 361-366
Topics in hyperplane arrangements, by Marcelo Aguiar and Swapneel Mahajan.
Reviewer: S. Forcey
Review information PDF
Bull. Amer. Math. Soc. 56 (2019), 367-372