On minimal flows, definably amenable groups, and o-minimality

نویسندگان

  • Anand Pillay
  • Ningyuan Yao
چکیده

We study definably amenable groups in NIP theories, focusing on the problem raised in [10] of whether weak generic types coincide with almost periodic types, equivalently whether the union of minimal subflows of a suitable type space is closed. We give fairly definitive results in the o-minimal context, including a counterexample.

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تاریخ انتشار 2015