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We show that a uniform quadrangulation, its largest 2-connected block, and its largest simple block jointly converge to the same Brownian map in distribution for the Gromov-Hausdorff-Prokhorov topology. We start by deriving a local limit…

概率论 · 数学 2016-04-29 Louigi Addario-Berry , Yuting Wen

We present the first parallel fixed-parameter algorithm for subgraph isomorphism in planar graphs, bounded-genus graphs, and, more generally, all minor-closed graphs of locally bounded treewidth. Our randomized low depth algorithm has a…

数据结构与算法 · 计算机科学 2020-07-03 Lukas Gianinazzi , Torsten Hoefler

We find precise asymptotic estimates for the number of planar maps and graphs with a condition on the minimum degree, and properties of random graphs from these classes. In particular we show that the size of the largest tree attached to…

组合数学 · 数学 2018-06-12 Marc Noy , Lander Ramos

We investigate the structure of conformally rigid graphs. Graphs are conformally rigid if introducing edge weights cannot increase (decrease) the second (last) eigenvalue of the Graph Laplacian. Edge-transitive graphs and distance-regular…

组合数学 · 数学 2025-06-26 João Gouveia , Stefan Steinerberger , Rekha R. Thomas

We review mathematically tractable models for connected networks on random points in the plane, emphasizing the class of proximity graphs which deserves to be better known to applied probabilists and statisticians. We introduce and motivate…

概率论 · 数学 2011-01-06 David J. Aldous , Julian Shun

We survey the theory and applications of mating-of-trees bijections for random planar maps and their continuum analog: the mating-of-trees theorem of Duplantier, Miller, and Sheffield (2014). The latter theorem gives an encoding of a…

概率论 · 数学 2023-02-16 Ewain Gwynne , Nina Holden , Xin Sun

We prove a lower bound on the number of spanning two-forests in a graph, in terms of the number of vertices, edges, and spanning trees. This implies an upper bound on the average cut size of a random two-forest. The main tool is an identity…

组合数学 · 数学 2023-08-09 Harry Richman , Farbod Shokrieh , Chenxi Wu

We prove that large Boltzmann stable planar maps of index $\alpha \in (1;2)$ converge in the scaling limit towards a random compact metric space $\mathcal{S}_{\alpha}$ that we construct explicitly. They form a one-parameter family of random…

概率论 · 数学 2025-05-12 Nicolas Curien , Grégory Miermont , Armand Riera

The goal of this paper is to provide a general purpose result for the coupling of exploration processes of random graphs, both undirected and directed, with their local weak limits when this limit is a marked Galton-Watson process. This…

概率论 · 数学 2022-02-01 Mariana Olvera-Cravioto

Geometry of networks endowed with a causal structure is discussed using the conventional framework of equilibrium statistical mechanics. The popular growing network models appear as particular causal models. We focus on a class of tree…

统计力学 · 物理学 2009-11-07 P. Bialas , Z. Burda , J. Jurkiewicz , A. Krzywicki

We investigate random connected graphs from a block-stable class whose distribution is weighted based on the number of $2$-connected components, or blocks. This includes the class of planar graphs. For this, we develop a notion of a…

组合数学 · 数学 2026-04-28 Mihyun Kang , Zéphyr Salvy , Ronen Wdowinski

We show that the scaling limit of the random walk loop soup on suitable planar graphs is the Brownian loop soup, under a topology on multisets of unrooted, unparameterized, and macroscopic loops. The result holds assuming only convergence…

概率论 · 数学 2026-03-16 Yihao Pang

In this paper we introduce a general framework for the study of limits of relational structures in general and graphs in particular, which is based on a combination of model theory and (functional) analysis. We show how the various…

组合数学 · 数学 2021-04-23 Jaroslav Nesetril , Patrice Ossona De Mendez

We show that the number $g_n$ of labelled series-parallel graphs on $n$ vertices is asymptotically $g_n \sim g\cdot n^{-5/2} \gamma^n n!$, where $\gamma$ and $g$ are explicit computable constants. We show that the number of edges in random…

组合数学 · 数学 2007-05-23 Manuel Bodirsky , Omer Gimenez , Mihyun Kang , Marc Noy

We study mixing of the Metropolis algorithm for a distribution on the hypercube that corresponds to the Erd\H{o}s-R\'enyi random graph with edge probability p. This Markov chain has cutoff at max{p,1-p} n log n with window size n, a result…

概率论 · 数学 2013-09-30 Winfried Barta

Colored tensor models generalize matrix models in arbitrary dimensions yielding a statistical theory of random higher dimensional topological spaces. They admit a 1/N expansion dominated by graphs of spherical topology. The simplest tensor…

高能物理 - 理论 · 物理学 2013-05-29 Razvan Gurau

Let $\mathbf G$ be a graphing, that is a Borel graph defined by $d$ measure preserving involutions. We prove that if $\mathbf G$ is {\em treeable} then it arises as the local limit of some sequence $(G_n)_{n\in\mathbb{N}}$ of graphs with…

组合数学 · 数学 2016-01-22 Lucas Hosseini , Patrice Ossona de Mendez

We study the problem of how well a tree metric is able to preserve the sum of pairwise distances of an arbitrary metric. This problem is closely related to low-stretch metric embeddings and is interesting by its own flavor from the line of…

数据结构与算法 · 计算机科学 2013-01-16 Mong-Jen Kao , Der-Tsai Lee , Dorothea Wagner

We prove that every 2k-edge-connected graph with countably many edge-ends admits a k-arc-connected orientation, extending the previous result by Assem, Koloschin and Pitz that also assumed the hypothesis of the graph being locally finite.…

组合数学 · 数学 2025-10-09 Leandro Aurichi , Paulo Magalhães Júnior , Guilherme Eduardo Pinto

In this paper, we investigate the problem of generating the spanning trees of a graph $G$ up to the automorphisms or "symmetries" of $G$. After introducing and surveying this problem for general input graphs, we present algorithms that…

数据结构与算法 · 计算机科学 2025-08-20 Mithra Karamchedu , Lucas Bang