Some relations between the metric structure and the algebraic structure of the fundamental group in manifolds of nonpositive curvature

DOI10.1090/S0002-9904-1971-12747-7zbMath0237.53037MaRDI QIDQ5647590

Publication date: 1971

Published in: Bulletin of the American Mathematical Society (Search for Journal in Brave)

Global Riemannian geometry, including pinching (53C20) Fundamental group, presentations, free differential calculus (57M05) Discontinuous groups of transformations (57S30)

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