Commentarii Mathematici Helvetici

, Volume 65, Issue 1, pp 150–169

Rigidity for surfaces of non-positive curvature

  • Christopher B. Croke
Article

DOI: 10.1007/BF02566599

Cite this article as:
Croke, C.B. Commentarii Mathematici Helvetici (1990) 65: 150. doi:10.1007/BF02566599
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Copyright information

© Birkhäuser Verlag 1990

Authors and Affiliations

  • Christopher B. Croke
    • 1
  1. 1.Dept. of MathematicsUniversity of PennsylvaniaPhiladelphiaU.S.A.