Moment obstructions and continuum-to-discrete bounds for checkerboard no-three-in-line sets

Jujhar Aujla, Thomas Prellberg, Nirvair Sandhu

Fix one colour class in the checkerboard colouring of an $n\times n$ integer grid, and let $M_4(n,\epsilon )$ be the largest subset having at most two points in every row, column…