Edit Profile (opens in new tab) Foertsch, Thomas Co-Author Distance Author ID: foertsch.thomas Published as: Foertsch, Thomas External Links: MGP Documents Indexed: 27 Publications since 1999, including 1 Book and 2 Additional arXiv Preprints Reviewing Activity: 23 Reviews Co-Authors: 10 Co-Authors with 20 Joint Publications 208 Co-Co-Authors all top 5 Co-Authors 7 single-authored 13 Schröder, Viktor M. H. 3 Lytchak, Alexander 1 Bernig, Andreas 1 Bletz-Siebert, Oliver 1 Bonk, Mario 1 Hasse, Wolfgang 1 Karlsson, Anders 1 Perlick, Volker 1 Radke, Katrin 1 Wegner, Bernd all top 5 Serials 2 Beiträge zur Algebra und Geometrie 2 Archiv der Mathematik 2 Manuscripta Mathematica 2 Pacific Journal of Mathematics 2 Proceedings of the American Mathematical Society 2 Transactions of the American Mathematical Society 2 IMRN. International Mathematics Research Notices 1 Classical and Quantum Gravity 1 Colloquium Mathematicum 1 Geometriae Dedicata 1 Illinois Journal of Mathematics 1 Journal of Geometry 1 Mathematische Annalen 1 Mathematische Zeitschrift 1 Geometric and Functional Analysis. GAFA 1 Advances in Geometry all top 5 Fields 25 Differential geometry (53-XX) 8 Geometry (51-XX) 3 Convex and discrete geometry (52-XX) 3 General topology (54-XX) 2 Relativity and gravitational theory (83-XX) 1 Functional analysis (46-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 19 Publications have been cited 176 times in 129 Documents Cited by ▼ Year ▼ Nonpositive curvature and the Ptolemy inequality. Zbl 1135.53055 Foertsch, Thomas; Lytchak, Alexander; Schroeder, Viktor 32 2007 Hyperbolicity, CAT(\(-1\))-spaces and the Ptolemy inequality. Zbl 1219.53042 Foertsch, Thomas; Schroeder, Viktor 28 2011 The de Rham decomposition theorem for metric spaces. Zbl 1159.53026 Foertsch, Thomas; Lytchak, Alexander 25 2008 Hilbert metrics and Minkowski norms. Zbl 1084.52008 Foertsch, Thomas; Karlsson, Anders 17 2005 Group actions on geodesic Ptolemy spaces. Zbl 1220.53092 Foertsch, Thomas; Schroeder, Viktor 11 2011 Asymptotic upper curvature bounds in coarse geometry. Zbl 1104.53036 Bonk, Mario; Foertsch, Thomas 10 2006 Non standard metric products. Zbl 1049.54009 Bernig, Andreas; Foertsch, Thomas; Schroeder, Viktor 10 2003 Minkowski versus Euclidean rank for products of metric spaces. Zbl 0988.53033 Foertsch, Thomas; Schroeder, Viktor 7 2002 Inertial forces and photon surfaces in arbitrary spacetimes. Zbl 1050.83009 Foertsch, Thomas; Hasse, Wolfgang; Perlick, Volker 7 2003 Metric Möbius geometry and a characterization of spheres. Zbl 1270.51016 Foertsch, Thomas; Schroeder, Viktor 7 2013 Ball versus distance convexity of metric spaces. Zbl 1070.53046 Foertsch, Thomas 5 2004 Erratum to: Nonpositive curvature and the Ptolemy inequality. Zbl 1131.53040 Foertsch, Thomas; Lytchak, Alexander; Schroeder, Viktor 4 2007 A product construction for hyperbolic metric spaces. Zbl 1104.53038 Foertsch, Thomas; Schroeder, Viktor 4 2005 Products of hyperbolic metric spaces. Zbl 1048.53027 Foertsch, Thomas; Schroeder, Viktor 2 2003 Bilipschitz embeddings of negative sectional curvature in products of warped product manifolds. Zbl 1012.53033 Foertsch, Thomas 2 2002 Ptolemy circles and Ptolemy segments. Zbl 1267.53078 Foertsch, Thomas; Schroeder, Viktor 2 2012 The Euclidean rank of Hilbert geometries. Zbl 1155.53331 Bletz-Siebert, Oliver; Foertsch, Thomas 1 2007 Möbius characterization of hemispheres. Zbl 1266.51017 Foertsch, Thomas; Schroeder, Viktor 1 2012 Characterizing complete \(\mathrm{CAT}(\kappa)\)-spaces, \(\kappa<0\), with geodesic boundary. Zbl 1254.53072 Foertsch, Thomas; Radke, Katrin 1 2011 Metric Möbius geometry and a characterization of spheres. Zbl 1270.51016 Foertsch, Thomas; Schroeder, Viktor 7 2013 Ptolemy circles and Ptolemy segments. Zbl 1267.53078 Foertsch, Thomas; Schroeder, Viktor 2 2012 Möbius characterization of hemispheres. Zbl 1266.51017 Foertsch, Thomas; Schroeder, Viktor 1 2012 Hyperbolicity, CAT(\(-1\))-spaces and the Ptolemy inequality. Zbl 1219.53042 Foertsch, Thomas; Schroeder, Viktor 28 2011 Group actions on geodesic Ptolemy spaces. Zbl 1220.53092 Foertsch, Thomas; Schroeder, Viktor 11 2011 Characterizing complete \(\mathrm{CAT}(\kappa)\)-spaces, \(\kappa<0\), with geodesic boundary. Zbl 1254.53072 Foertsch, Thomas; Radke, Katrin 1 2011 The de Rham decomposition theorem for metric spaces. Zbl 1159.53026 Foertsch, Thomas; Lytchak, Alexander 25 2008 Nonpositive curvature and the Ptolemy inequality. Zbl 1135.53055 Foertsch, Thomas; Lytchak, Alexander; Schroeder, Viktor 32 2007 Erratum to: Nonpositive curvature and the Ptolemy inequality. Zbl 1131.53040 Foertsch, Thomas; Lytchak, Alexander; Schroeder, Viktor 4 2007 The Euclidean rank of Hilbert geometries. Zbl 1155.53331 Bletz-Siebert, Oliver; Foertsch, Thomas 1 2007 Asymptotic upper curvature bounds in coarse geometry. Zbl 1104.53036 Bonk, Mario; Foertsch, Thomas 10 2006 Hilbert metrics and Minkowski norms. Zbl 1084.52008 Foertsch, Thomas; Karlsson, Anders 17 2005 A product construction for hyperbolic metric spaces. Zbl 1104.53038 Foertsch, Thomas; Schroeder, Viktor 4 2005 Ball versus distance convexity of metric spaces. Zbl 1070.53046 Foertsch, Thomas 5 2004 Non standard metric products. Zbl 1049.54009 Bernig, Andreas; Foertsch, Thomas; Schroeder, Viktor 10 2003 Inertial forces and photon surfaces in arbitrary spacetimes. Zbl 1050.83009 Foertsch, Thomas; Hasse, Wolfgang; Perlick, Volker 7 2003 Products of hyperbolic metric spaces. Zbl 1048.53027 Foertsch, Thomas; Schroeder, Viktor 2 2003 Minkowski versus Euclidean rank for products of metric spaces. Zbl 0988.53033 Foertsch, Thomas; Schroeder, Viktor 7 2002 Bilipschitz embeddings of negative sectional curvature in products of warped product manifolds. Zbl 1012.53033 Foertsch, Thomas 2 2002 all cited Publications top 5 cited Publications all top 5 Cited by 161 Authors 13 Schröder, Viktor M. H. 7 Foertsch, Thomas 6 Buyalo, Sergei V. 6 Dovgoshey, Oleksiy Alfredovich 4 Caprace, Pierre-Emmanuel 4 Lytchak, Alexander 4 Xiao, Yingqing 3 Kell, Martin 3 Lemmens, Bas 3 Monod, Nicolas 3 Nicolae, Adriana 3 Perlick, Volker 3 Walsh, Cormac 3 Wangwe, Lucas 2 Berg, I. David 2 Bilet, Viktoriia Viktorivna 2 Colbois, Bruno 2 Descombes, Dominic 2 Ibragimov, Zair 2 Karlsson, Anders 2 Lang, Urs 2 Naor, Assaf 2 Nikolaev, Igor Georgievich 2 Rodríguez García, José Manuel 2 Roelands, Mark 2 Ṣahin, Bayram 2 Stadler, Stephan 2 Swenson, Eric L. 2 Touris, Eva 2 Vernicos, Constantin 2 Verovic, Patrick 1 Abbas, Mujahid 1 Andoni, Alexandr 1 Aschieri, Paolo 1 Aydi, Hassen Mohamed 1 Bačák, Miroslav 1 Bagherboum, Mozhgan 1 Basso, Giuliano 1 Bengtsson, Ingemar 1 Bennett, Hanna 1 Berestovskiĭ, Valeriĭ Nikolaevich 1 Bestvina, Mladen 1 Beyrer, Jonas 1 Bromberg, Kenneth W. 1 Bucher, Michelle 1 Buckley, Stephen M. 1 Castellani, Leonardo 1 Cederbaum, Carla 1 Chalopin, Jérémie 1 Chepoi, Victor D. 1 Ciobotaru, Corina 1 Conde, Cristian M. 1 Cui, Yumiao 1 Danciger, Jeffrey 1 Davies, Isobel 1 Domínguez-Vázquez, Miguel 1 Dreesen, Dennis 1 Dumas, David 1 Eskenazis, Alexandros 1 Espínola García, Rafael 1 Evans, Steven Neil 1 Fioravanti, Elia 1 Fisher, David Michael 1 Fujiwara, Koji 1 Galdames Bravo, Orlando 1 Galloway, Gregory J. 1 Gelander, Tsachik 1 Gorodski, Claudio 1 Grochowski, Marek 1 Gu, Junping 1 Guéritaud, François 1 Guralnik, Dan P. 1 Hammad, Hasanen Abuelmagd 1 Hamza, Safia 1 Hartmann, Elisa 1 Hasse, Wolfgang 1 Hästö, Peter A. 1 Haucourt, Emmanuel 1 Horvath, Charles D. 1 Huang, Jingyin 1 Jefremov, Paul I. 1 Ji, Lizhen 1 Jiang, Yueping 1 Kapovitch, Vitali 1 Karpinski, Chris 1 Kassel, Fanny 1 Kattan, Doha A. 1 Khan, Safeer Hussain 1 Khemaratchatakumthorn, Tammatada 1 Kleiner, Bruce 1 Klin-Eam, Chakkrid 1 Kohlenbach, Ulrich Wilhelm 1 Krifka, Yannick 1 Kurusa, Árpád 1 Kuznetsov, Aleksey Mikhailovich 1 Le Donne, Enrico 1 Leitner, Arielle 1 Levit, Arie 1 Li, Xining 1 Li, Yaxiang ...and 61 more Authors all top 5 Cited in 75 Serials 7 Geometriae Dedicata 5 St. Petersburg Mathematical Journal 4 Journal of Mathematical Analysis and Applications 4 Mathematische Zeitschrift 4 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 4 Transactions of the American Mathematical Society 3 Archiv der Mathematik 3 Manuscripta Mathematica 3 Mathematische Annalen 3 Mathematica Slovaca 3 Geometric and Functional Analysis. GAFA 3 Expositiones Mathematicae 3 The Journal of Analysis 3 Analysis and Geometry in Metric Spaces 2 Journal of Mathematical Physics 2 Annales de l’Institut Fourier 2 Journal of Geometry 2 Michigan Mathematical Journal 2 L’Enseignement Mathématique. 2e Série 2 Journal of Mathematical Sciences (New York) 2 Conformal Geometry and Dynamics 2 Geometry & Topology 2 Acta Mathematica Sinica. English Series 2 Advances in Geometry 2 Bulletin of the Malaysian Mathematical Sciences Society. Second Series 2 Central European Journal of Mathematics 2 Groups, Geometry, and Dynamics 2 \(p\)-Adic Numbers, Ultrametric Analysis, and Applications 1 Classical and Quantum Gravity 1 General Relativity and Gravitation 1 Chaos, Solitons and Fractals 1 Mathematics Magazine 1 Journal of Geometry and Physics 1 Beiträge zur Algebra und Geometrie 1 Annales Scientifiques de l’École Normale Supérieure. Quatrième Série 1 Commentarii Mathematici Helvetici 1 International Journal of Mathematics and Mathematical Sciences 1 Inventiones Mathematicae 1 Journal of Algebra 1 Journal für die Reine und Angewandte Mathematik 1 Monatshefte für Mathematik 1 Osaka Journal of Mathematics 1 Pacific Journal of Mathematics 1 Proceedings of the American Mathematical Society 1 Tôhoku Mathematical Journal. Second Series 1 Topology and its Applications 1 European Journal of Combinatorics 1 Discrete & Computational Geometry 1 Revista Matemática Iberoamericana 1 Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Serie IX. Rendiconti Lincei. Matematica e Applicazioni 1 Differential Geometry and its Applications 1 Mathematical Structures in Computer Science 1 The Journal of Geometric Analysis 1 Numerical Algorithms 1 Russian Mathematics 1 Topological Methods in Nonlinear Analysis 1 Applied Categorical Structures 1 Turkish Journal of Mathematics 1 Journal of Convex Analysis 1 Annales Academiae Scientiarum Fennicae. Mathematica 1 Acta Mathematica Scientia. Series B. (English Edition) 1 Comptes Rendus. Mathématique. Académie des Sciences, Paris 1 South East Asian Journal of Mathematics and Mathematical Sciences 1 International Journal of Geometric Methods in Modern Physics 1 Mediterranean Journal of Mathematics 1 Boundary Value Problems 1 Journal of Fixed Point Theory and Applications 1 Journal of Topology 1 Journal of Topology and Analysis 1 Japanese Journal of Mathematics. 3rd Series 1 Analysis and Mathematical Physics 1 Journal de l’École Polytechnique – Mathématiques 1 Waves, Wavelets and Fractals. Advanced Analysis 1 Annales Henri Lebesgue 1 Annales Fennici Mathematici all top 5 Cited in 33 Fields 79 Differential geometry (53-XX) 34 General topology (54-XX) 28 Geometry (51-XX) 20 Group theory and generalizations (20-XX) 18 Functions of a complex variable (30-XX) 10 Functional analysis (46-XX) 10 Manifolds and cell complexes (57-XX) 9 Topological groups, Lie groups (22-XX) 9 Operator theory (47-XX) 7 Convex and discrete geometry (52-XX) 7 Global analysis, analysis on manifolds (58-XX) 6 Relativity and gravitational theory (83-XX) 5 Real functions (26-XX) 5 Several complex variables and analytic spaces (32-XX) 3 Combinatorics (05-XX) 3 Dynamical systems and ergodic theory (37-XX) 2 Number theory (11-XX) 2 Measure and integration (28-XX) 2 Abstract harmonic analysis (43-XX) 2 Calculus of variations and optimal control; optimization (49-XX) 2 Probability theory and stochastic processes (60-XX) 1 Mathematical logic and foundations (03-XX) 1 Field theory and polynomials (12-XX) 1 Algebraic geometry (14-XX) 1 Linear and multilinear algebra; matrix theory (15-XX) 1 Nonassociative rings and algebras (17-XX) 1 Category theory; homological algebra (18-XX) 1 Ordinary differential equations (34-XX) 1 Partial differential equations (35-XX) 1 Numerical analysis (65-XX) 1 Computer science (68-XX) 1 Operations research, mathematical programming (90-XX) 1 Game theory, economics, finance, and other social and behavioral sciences (91-XX) Citations by Year