Contents Online

# Mathematical Research Letters

## Volume 25 (2018)

### Number 5

### Contents

Bilinear spherical maximal function

pp. 1369-1388

Horocyclic invariance of Ruelle resonant states for contact Anosov flows in dimension $3$

pp. 1405-1427

Trisections and spun four-manifolds

pp. 1497-1524

Galois descent for the gonality of curves

pp. 1567-1589

Definable maximal discrete sets in forcing extensions

pp. 1591-1612

Deforming group actions on Koszul algebras

pp. 1613-1644

Index theorem for $\mathbb{Z}/2$-harmonic spinors

pp. 1645-1671