# Volume 15, No. 3 (2021)

Groups, Geometry, and Dynamics

S2O

Articles of this issue are accessible as *open access* under our subscribe to open model.

pp. 755–799 Entropy and finiteness of groups with acylindrical splittingsFilippo CerocchiAndrea Sambusetti

DOI 10.4171/GGD/611pp. 801–824 On spherical unitary representations of groups of spheromorphisms of Bruhat–Tits treesYury A. Neretin

DOI 10.4171/GGD/612pp. 825–848 WWPD elements of big mapping class groupsAlexander J. Rasmussen

DOI 10.4171/GGD/613pp. 849–892 Maximal subgroups and von Neumann subalgebras with the Haagerup propertyYongle JiangAdam Skalski

DOI 10.4171/GGD/614pp. 893–934 Convexity of balls in outer spaceYulan QingKasra Rafi

DOI 10.4171/GGD/615pp. 935–963 Random walks on the discrete affine groupJérémie BrieusselRyokichi TanakaTianyi Zheng

DOI 10.4171/GGD/616pp. 965–987 Alternating quotients of right-angled Coxeter groupsMichal Buran

DOI 10.4171/GGD/617pp. 989–1013 A complex Euclidean reflection group with a non-positively curved complement complexBen CotéJon McCammond

DOI 10.4171/GGD/620pp. 1015–1039 Properly discontinuous actions versus uniform embeddingsKevin Schreve

DOI 10.4171/GGD/621pp. 1041–1058 Fluctuations of ergodic averages for amenable group actionsUri Gabor

DOI 10.4171/GGD/622pp. 1059–1083 Almost commuting matrices with respect to the rank metricGábor ElekŁukasz Grabowski

DOI 10.4171/GGD/623pp. 1085–1101 Narrow equidistribution and counting of closed geodesics on noncompact manifoldsBarbara SchapiraSamuel Tapie

DOI 10.4171/GGD/624pp. 1103–1132 On the existence of free subsemigroups in reversible automata semigroupsDominik FrancoeurIvan Mitrofanov

DOI 10.4171/GGD/626pp. 1133–1137 Erratum to “On groups with $S_{2}$ Bowditch boundary”Bena TshishikuGenevieve Walsh

DOI 10.4171/GGD/625