Definable Tietze extension conjecture for DCULOAS structures

Let MM be a definably complete uniformly locally o-minimal structure of the second kind, abbreviated DCULOAS, and suppose that MM enjoys the definable Tietze extension property. Definable Tietze extension conjecture. The structure MM is o-minimal. The theorem established in the surrounding discussion proves this implication only for archimedean DCULOAS structures; the conjecture remains open in general.

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Primary source

Masato Fujita, “Functions definable in definably complete uniformly locally o-minimal structure of the second kind”, arXiv:2010.02420 (2021).

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