A class of groups whose local sequence is nonstationary
A class of groups whose local sequence is nonstationary
Let 2 be a class of groups. Define the local operator L as follows: (i) LO (2) = Z. (ii) If a>O is an ordinal number, then La(2)=the class of all groups having an upper-directed cover of subgroups, each belonging to the class U {Lil(2)JIl 0 is an ordinal number, …