Acta Mathematica

Volume 218 (2017)

Number 1

Contents

Tits geometry and positive curvature

Fuquan Fang, Karsten Grove, and Gudlaugur Thorbergsson

pp. 1-53

Equivariant Dirac operators and differentiable geometric invariant theory

Paul-Emile Paradan and Michèle Vergne

pp. 137-199