JournalsggdVol. 15, No. 4Groups, Geometry, and DynamicsVolume 15, No. 4 (2021)S2OArticles of this issue are accessible as open access under our subscribe to open model.pp. 1139–1174Amenability and measure of maximal entropy for semigroups of rational mapsCarlos CabreraPeter Makienkopp. 1175–1196Locally Roelcke precompact Polish groupsJoseph Zielinskipp. 1197–1265Algorithmic aspects of branched coverings III/V. Erasing maps, orbispaces, and the Birman exact sequenceLaurent BartholdiDzmitry Dudkopp. 1267–1295Patterns in sets of positive density in trees and affine buildingsMichael BjörklundAlexander FishJames Parkinsonpp. 1297–1330Stability in a groupGabriel Conantpp. 1331–1361Divergence of finitely presented groupsNoel BradyHung Cong Tranpp. 1363–1398Cohomology of hyperfinite Borel actionsSergey I. BezuglyiShrey Sanadhyapp. 1399–1420On a family of unitary representations of mapping class groupsBiao Mapp. 1421–1448Isolated circular orders of PSL(2,Z\mathbb{Z}Z)Shigenori Matsumotopp. 1449–1487Cantor dynamics of renormalizable groupsSteven HurderOlga LukinaWouter van Limbeekpp. 1489–1521Minimality of the action on the universal circle of uniform foliationsSérgio R. FenleyRafael Potriepp. 1523–1552Elementary subgroups of virtually free groupsSimon André
pp. 1139–1174Amenability and measure of maximal entropy for semigroups of rational mapsCarlos CabreraPeter Makienko
pp. 1197–1265Algorithmic aspects of branched coverings III/V. Erasing maps, orbispaces, and the Birman exact sequenceLaurent BartholdiDzmitry Dudko
pp. 1267–1295Patterns in sets of positive density in trees and affine buildingsMichael BjörklundAlexander FishJames Parkinson
pp. 1489–1521Minimality of the action on the universal circle of uniform foliationsSérgio R. FenleyRafael Potrie
