20F50 3 20B35 2 20E08 2 20F28 2 diagonal embedding 2 direct limit 2 direct limits 2 group automorphisms 2 homogeneous symmetric group 2 local isometry 2 rooted tree 2 16E30; Secondary; 16D90 1 16GXX 1 20E32; 20E08 1 37A15 1 Primary 16EXX 1 diagonal embeddings 1 hierarchomorphism 1 hierarhomorphism 1 infinitely generated tilting module 1 locally finite simple groups 1 measure-preserving actions 1 special preenvelope 1 tilting modules 1