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Non-linear ergodic theorems in complete non-positive curvature metric spaces. (English) Zbl 1269.47045

The paper presents extensions of nonlinear ergodic theorems for continuous non-expansive semigroups from Hilbert spaces to Hadamard spaces.

MSC:

47H25 Nonlinear ergodic theorems
53C23 Global geometric and topological methods (à la Gromov); differential geometric analysis on metric spaces
54E35 Metric spaces, metrizability
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