Papadopoulos, Athanase Metric spaces, convexity and nonpositive curvature. 2nd edition. (English) Zbl 1296.53007 IRMA Lectures in Mathematics and Theoretical Physics 6. Zürich: European Mathematical Society (EMS) (ISBN 978-3-03719-132-3/pbk). xi, 309 p. (2014). Reviewer: I. G. Nikolaev (Urbana) MSC: 53-02 53C21 53C70 54E35 52A07 51K05 PDFBibTeX XMLCite \textit{A. Papadopoulos}, Metric spaces, convexity and nonpositive curvature. 2nd edition. Zürich: European Mathematical Society (EMS) (2014; Zbl 1296.53007) Full Text: DOI
Papadopoulos, Athanase Metric spaces, convexity and nonpositive curvature. (English) Zbl 1115.53002 IRMA Lectures in Mathematics and Theoretical Physics 6. Zürich: European Mathematical Society Publishing House (ISBN 3-03719-010-8/pbk). xi, 287 p. (2005). Reviewer: Andrew Bucki (Edmond) MSC: 53-02 53C70 53C21 53C65 51K05 52A07 52A41 53C22 54E35 57M50 PDFBibTeX XMLCite \textit{A. Papadopoulos}, Metric spaces, convexity and nonpositive curvature. Zürich: European Mathematical Society Publishing House (2005; Zbl 1115.53002) Full Text: DOI