Locating any two vertices on Hamiltonian cycles

preprint2017arXivOpen access

Abstract

In this paper we give a proof of Enomoto's conjecture for graphs of sufficiently large order. Enomoto's conjecture states that, if GG is a graph of order nn with minimum degree δ(G)≥n2+1δ(G)\geq \frac{n}{2}+1, then for any pair of vertices xx, yy in GG, there is a Hamiltonian cycle CC of GG such that dC(x,y)=⌊n2⌋d_C(x,y)=\lfloor \frac{n}{2}\rfloor. The main tools of our proof are Regularity Lemma of Szemerédi and Blow-up Lemma of Komlós et al.

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