Homogeneous families and their automorphism groups

by Kojman and Shelah. [KjSh:499]
J London Math Soc, 1995
A homogeneous family of subsets over a given set is one with a very ``rich'' automorphism group. We prove the existence of a bi-universal element in the class of homogeneous families over a given infinite set and give an explicit construction of 2^c isomorphism types of homogeneous families over a countable set.


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