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arXiv · 1603.08806

A Preferential Attachment Process Approaching the Rado Graph

Richard Elwes
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Abstract

We consider a simple Preferential Attachment graph process, which begins with a finite graph, and in which a new $(t+1)$st vertex is added at each subsequent time step $t$, and connected to each previous vertex $u \leq t$ with probability $\frac{d_u(t)}{t}$ where $d_u(t)$ is the degree of $u$ at time $t$. We analyse the graph obtained as the infinite limit of this process, and show that so long as the initial finite graph is neither edgeless nor complete, with probability 1 the outcome will be a copy of the Rado graph augmented with a finite number of either isolated or universal vertices.

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Richard Elwes. 2019-07-04. A Preferential Attachment Process Approaching the Rado Graph. https://doi.org/10.1017/s0013091519000336

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