English

$M\setminus L$ near 3

Number Theory 2019-04-02 v1

Abstract

We construct four new elements 3.11>m1>m2>m3>m43.11>m_1>m_2>m_3>m_4 of M\LM\backslash L lying in distinct connected components of RL\mathbb{R}\setminus L, where MM is the Markov spectrum and LL is the Lagrange spectrum. These elements are part of a decreasing sequence (mk)kN(m_k)_{k\in\mathbb{N}} of elements in MM converging to 33 and we give some evidence towards the possibility that mkMLm_k\in M\setminus L for all k1k\geq 1. In particular, this indicates that 33 might belong to the closure of MLM\setminus L, so that the answer to Bousch's question about the closedness of MLM\setminus L might be negative.

Cite

@article{arxiv.1904.00269,
  title  = {$M\setminus L$ near 3},
  author = {Davi Lima and Carlos Matheus and Carlos Gustavo Moreira and Sandoel Vieira},
  journal= {arXiv preprint arXiv:1904.00269},
  year   = {2019}
}

Comments

44 pages

R2 v1 2026-06-23T08:24:07.960Z