The ordered-field IP conjecture on the natural numbers
The ordered-field IP conjecture on the natural numbers
Let and be binary operations on such that is a field. Ordered-field IP conjecture. The expansion has the independence property. This conjecture is presented as a special case of the directed-family conjecture and would obstruct tame expansions interpreting an infinite field on a discrete domain.
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Primary source
Erik Walsberg, “Externally definable quotients and NIP expansions of the real ordered additive group”, arXiv:1910.10572 (2020).
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