Metric Spaces of Non-Positive Curvature Book

PART I: Geodesic Metric Spaces: BASIC CONCEPTS. THE MODEL SPACES Mnk.- LENGTH SPACES.- NORMED SPACES.- SOME BASIC CONSTRUCTIONS.- MORE ON THE GEOMETRY OF $M Ök$sub.- $M Ök$-POLYHEDRAL COMPLEXES.- APPENDIX 7A: Metrizing abstract simplicial complexes.- GROUP ACTIONS AND QUASI-ISOMETRIES.- APPENDIX 8A: Combinatorial 2-complexes.- Part II: CAT($Ökappa$) Spaces.- DEFINITIONS AND CHARACTERIZATIONS OF CAT($Ökappa$) SPACES.- CONVEXITY AND ITS CONSEQUENCES.- ANGLES, LIMITS, CONES AND JOINS.- THE CARTAN-HADAMARD THEOREM.- $M Ök$-POLYHEDRAL COMPLEXES.- ISOMETRIES OF CAT(0) SPACES.- THE FLAT TORUS THEOREM.- THE BOUNDARY AT INFINITY OF A CAT(0) SPACE.- THE TITS METRIC AND VISIBILITY SPACES.- SYMMETRIC SPACES.- APPENDIX 10A: Spherical and Euclidean buildings.- CONSTRUCTIONS INVOLVING GLUING.- SIMPLE COMPLEXES OF GROUPS.- Part III: Topics in non-positive curvature.- $Ödelta$-HYPERBOLIC SPACES.- $ÖGamma$: NON-POSITIVE CURVATURE AND GROUP THEORY.-.$ÖCal C$: COMPLEXES OF GROUPS.- .$ÖCal G$: GROUPOIDS OF LOCAL ISOMETRIES.