Cutting lemma and Zarankiewicz's problem in distal structures
- Author(s): Chernikov, Artem;
- Galvin, David;
- Starchenko, Sergei
- et al.
Published Web Locationhttps://doi.org/10.1007/s00029-020-0551-2
We establish a cutting lemma for definable families of sets in distal structures, as well as the optimality of the distal cell decomposition for definable families of sets on the plane in $o$-minimal expansions of fields. Using it, we generalize the results in [J. Fox, J. Pach, A. Sheffer, A. Suk, and J. Zahl. "A semi-algebraic version of Zarankiewicz's problem"] on the semialgebraic planar Zarankiewicz problem to arbitrary $o$-minimal structures, in particular obtaining an $o$-minimal generalization of the Szemer