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SUMMARY:Groups actions on dendrites - Bruno Duchesne (Université de Lorra
 ine)
DTSTART:20170111T143000Z
DTEND:20170111T153000Z
UID:TALK69883@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:<span>         Co-author: Nicolas Monod 		(EPFL)        <br></
 span>&nbsp\;<br>A dendrite is a compact metrizable space such that any two
  points are  connected by a unique arc. Dendrites may appear as Julia sets
 \, Berkovich  projective lines and played in important role in the proof o
 f the cut  point conjecture for boundaries of hyperbolic groups by Bowditc
 h. <br>  &nbsp\;<br>In a common work with Nicolas Monod\, we study groups 
 acting on dendrites  by homeomorphisms. In this purely topological context
 \, we obtain  rigidity results for lattices of algebraic groups\, an analo
 g of Tits  alternative\, simplicity and other topological results.        
  <br><br>Related Links        <ul>         <li><a target="_blank" rel="nof
 ollow" href="http://www-old.newton.ac.uk/cgi/https%3A%2F%2Farxiv.org%2Fabs
 %2F1609.00303">https://arxiv.org/abs/1609.00303</a> - Preprint on arXiv</l
 i></ul>
LOCATION:Seminar Room 1\, Newton Institute
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