Contents Online

# Surveys in Differential Geometry

## Volume 15 (2010)

## Perspectives in mathematics and physics

## Essays dedicated to Isadore Singer’s 85th birthday

### Editors: Mrowka; Yau

### Contents

Subgroups of depth three

pp. 17-36

Spin structures and superstrings

pp. 99-130

Operator traces and holography

pp. 131-162

The signature of the Seiberg-Witten surface

pp. 255-278

Quasi-local mass in general relativity

pp. 421-434