{ "id": "2105.14883", "version": "v1", "published": "2021-05-31T11:12:02.000Z", "updated": "2021-05-31T11:12:02.000Z", "title": "Component behaviour and excess of random bipartite graphs near the critical point", "authors": [ "Tuan Anh Do", "Joshua Erde", "Mihyun Kang" ], "comment": "35 pages", "categories": [ "math.CO" ], "abstract": "The binomial random bipartite graph $G(n,n,p)$ is the random graph formed by taking two partition classes of size $n$ and including each edge between them independently with probability $p$. It is known that this model exhibits a similar phase transition as that of the binomial random graph $G(n,p)$ as $p$ passes the critical point of $\\frac{1}{n}$. We study the component structure of this model near to the critical point. We show that, as with $G(n,p)$, for an appropriate range of $p$ there is a unique `giant' component and we determine asymptotically its order and excess. We also give more precise results for the distribution of the number of components of a fixed order in this range of $p$. These results rely on new bounds for the number of bipartite graphs with a fixed number of vertices and edges, which we also derive.", "revisions": [ { "version": "v1", "updated": "2021-05-31T11:12:02.000Z" } ], "analyses": { "keywords": [ "critical point", "component behaviour", "binomial random bipartite graph", "binomial random graph", "similar phase transition" ], "note": { "typesetting": "TeX", "pages": 35, "language": "en", "license": "arXiv", "status": "editable" } } }