Structural conjectures for finitely homogeneous NIP structures

Let MM be a finitely homogeneous NIP structure. Structural conjecture. The following hold:

  1. The automorphism group Aut(M)\operatorname{Aut}(M) acts oligomorphically on the space of types S1(M)S_1(M).
  2. The structure MM is interpretable in a distal, finitely homogeneous structure.
  3. There is a structure MM' bi-interpretable with MM whose theory is quasi-finitely axiomatizable.
  4. If MM is not distal, then its theory is not finitely axiomatizable.

These assertions are presented as precise goals for the general NIP case, following the paper's discussion of the difficulty of classifying all finitely homogeneous NIP structures. Their status is not resolved in the supplied text.

Sources & referencesView supporting material

Primary source

Pierre Simon, “NIP omega-categorical structures: the rank 1 case”, arXiv:1807.07102 (2022).

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