English

On the number of intersection points of lines and circles in $\mathbb R^3$

Combinatorics 2020-05-29 v1 Computational Geometry Algebraic Geometry

Abstract

We consider the following question: Given nn lines and nn circles in R3\mathbb{R}^3, what is the maximum number of intersection points lying on at least one line and on at least one circle of these families. We prove that if there are no n1/2n^{1/2} curves (lines or circles) lying on an algebraic surface of degree at most two, then the number of these intersection points is O(n3/2)O(n^{3/2}).

Keywords

Cite

@article{arxiv.2005.14043,
  title  = {On the number of intersection points of lines and circles in $\mathbb R^3$},
  author = {Andrey Sergunin},
  journal= {arXiv preprint arXiv:2005.14043},
  year   = {2020}
}

Comments

12 pages