Badness and non-stationarity for dfg groups

Let HH be a group definable in an oo-minimal structure or a pp-adically closed field, and assume that HH is a dfg\mathrm{dfg} group. Say that HH is bad when it has the badness property defined in the paper, namely the relevant strongly ff-generic behavior fails as specified there. Badness conjecture. The group HH is bad if and only if HH is non-stationary. The paper has established badness for the displayed examples of the additive square and the Borel subgroup, while the equivalence for arbitrary dfg\mathrm{dfg} groups in the stated classes remains open.

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Primary source

Ningyuan Yao and Zhentao Zhang, “On minimal flows and definable amenability in some distal NIP theories”, arXiv:2209.08495 (2023).

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