Mathematical Research Letters

Volume 28 (2021)

Number 2

Contents

Two-solvable and two-bipolar knots with large four-genera

Jae Choon Cha, Allison N. Miller, and Mark Powell

pp. 331-382

The Birman exact sequence does not virtually split

Lei Chen and Nick Salter

pp. 383-413

Period integrals of vector bundle sections and tautological systems

An Huang, Bong Lian, Shing-Tung Yau, and Chenglong Yu

pp. 415-434

qKZ/tRS duality via quantum $K$-theoretic counts

Peter Koroteev and Anton M. Zeitlin

pp. 435-470

Construction of $\mathrm{G}_2$-instantons via twisted connected sums

Grégoire Menet, Johannes Nordström, and Henrique N. Sá Earp

pp. 471-509

On a conjecture for $\ell$-torsion in class groups of number fields: from the perspective of moments

Lillian B. Pierce, Caroline L. Turnage-Butterbaugh, and Melanie Matchett Wood

pp. 575-621