scholarly journals The universal minimal flow of the homeomorphism group of the Lelek fan

2018 ◽  
Vol 371 (10) ◽  
pp. 6995-7027 ◽  
Author(s):  
Dana Bartošová ◽  
Aleksandra Kwiatkowska
2018 ◽  
Vol 83 (04) ◽  
pp. 1618-1632 ◽  
Author(s):  
ALEKSANDRA KWIATKOWSKA

AbstractWe study universal minimal flows of the homeomorphism groups of generalized Ważewski dendrites WP, $P \subseteq \left\{ {3,4, \ldots ,\omega } \right\}$. If P is finite, we prove that the universal minimal flow of the homeomorphism group H (WP) is metrizable and we compute it explicitly. This answers a question of Duchesne. If P is infinite, we show that the universal minimal flow of H (WP) is not metrizable. This provides examples of topological groups which are Roelcke precompact and have a nonmetrizable universal minimal flow with a comeager orbit.


2018 ◽  
Vol 62 (1) ◽  
pp. 13-41
Author(s):  
MICHAEL S. WEISS

AbstractLet M be a smooth compact manifold with boundary. Under some geometric conditions on M, a homotopical model for the pair (M, ∂M) can be recovered from the configuration category of M \ ∂M. The grouplike monoid of derived homotopy automorphisms of the configuration category of M \ ∂M then acts on the homotopical model of (M, ∂M). That action is compatible with a better known homotopical action of the homeomorphism group of M \ ∂M on (M, ∂M).


2017 ◽  
Vol 61 (10) ◽  
pp. 1262-1269 ◽  
Author(s):  
A. J. Wetz ◽  
M. M. Mueller ◽  
K. Walliser ◽  
C. Foest ◽  
S. Wand ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document