English

Small intersection numbers in the curve graph

Geometric Topology 2017-05-17 v2

Abstract

Let Sg,pS_{g,p} denote the genus gg orientable surface with p0p \ge 0 punctures, and let ω(g,p)=3g+p4\omega(g,p)= 3g+p-4. We prove the existence of infinitely long geodesic rays {v0,v1,v2,...}\left\{v_{0},v_{1}, v_{2}, ...\right\} in the curve graph satisfying the following optimal intersection property: for any natural number kk, the endpoints vi,vi+kv_{i},v_{i+k} of any length kk subsegment intersect O(ωk2)O(\omega^{k-2}) times. By combining this with work of the first author, we answer a question of Dan Margalit.

Keywords

Cite

@article{arxiv.1310.4711,
  title  = {Small intersection numbers in the curve graph},
  author = {Tarik Aougab and Samuel J. Taylor},
  journal= {arXiv preprint arXiv:1310.4711},
  year   = {2017}
}

Comments

13 pages, 6 figures

R2 v1 2026-06-22T01:48:55.877Z