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arXiv · 2204.07376

The semi-random tree process

Sofiya Burova·Lyuben Lichev
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Abstract

The online semi-random graph process is a one-player game which starts with the empty graph on $n$ vertices. At every round, a player (called Builder) is presented with a vertex $v$ chosen uniformly at random and independently from previous rounds, and constructs an edge of their choice that is incident to $v$. Inspired by recent advances on the semi-random graph process, we define a family of generalised online semi-random models. We analyse a particular instance that shares similar features with the original semi-random graph process and determine the hitting times of the classical graph properties minimum degree $k$, $k$-connectivity, containment of a perfect matching, a Hamiltonian cycle and an $H$-factor for a fixed graph $H$ possessing an additional tree-like property. Along the way, we derive a few consequences of the famous Aldous-Broder algorithm that may be of independent interest.

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Sofiya Burova, Lyuben Lichev. 2022-04-15. The semi-random tree process. https://arxiv.org/abs/2204.07376

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