A theorem about vectors in $\mathbb{R}^2$ and an algebraic proof of a conjecture of Erdős and Purdy

Rom Pinchasi. A theorem about vectors in $\mathbb{R}^2$ and an algebraic proof of a conjecture of Erdős and Purdy. Australasian J. Combinatorics, 81:170-186, 2021. [doi]

Abstract

Abstract is missing.