Workshop on Invariant Random Subgroups

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<h4>1st name name, title</h4> <div class="level4"> <p> summary </p> </div> <h4>Adrien le Boudec: Locally compact groups whose ergodic or minimal actions are all free</h4> <div class="level4"> <p> The purpose of this talk would be to explain the construction of non-discrete locally compact groups with no non-trivial uniformly recurrent subgroups and no non-trivial invariant random subgroups. These groups are defined as groups of piecewise affine homeomorphisms of a locally compact Cantor space. Some examples can also be viewed as subgroups of the group AAut(T) of almost automorphisms of a regular tree, but unlike AAut(T), they are not compactly generated. Joint work with Nicolas Matte Bon. </p> </div>

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