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Timeline for Properly Discontinuous Action

Current License: CC BY-SA 3.0

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when toggle format what by license comment
Jun 30, 2011 at 21:37 comment added Stefan Witzel Of course, if a torsion-free group acts properly discontinuously, then it acts freely. So in that case the definitions are again equivalent.
Jun 30, 2011 at 21:15 history answered Stefan Witzel CC BY-SA 3.0