activity
20072025
most citedCondensation in nongeneric trees

56 citations · 143 across the 13 of their papers we have counts for

collaborators

14 papers

math.PR2025

The scaling limit of random 2-connected series-parallel maps

Daniel Amankwah, Jakob Björnberg, Sigurdur Örn Stefánsson +2

A finite graph embedded in the plane is called a series-parallel map if it can be obtained from a finite tree by repeatedly subdividing and doubling edges. We study the scaling lim…

math.PR2017

Geometry of large Boltzmann outerplanar maps

Sigurdur Örn Stefánsson, Benedikt Stufler

We study the phase diagram of random outerplanar maps sampled according to non-negative Boltzmann weights that are assigned to each face of a map. We prove that for certain choices…

math.PR2015

Almost sure convergence of vertex degree densities in the vertex-splitting model

Sigurdur Örn Stefánsson, Erik Thörnblad

We study the limiting degree distribution of the vertex splitting model introduced in \cite{DDJS:2009}. This is a model of randomly growing ordered trees, where in each time step t…

math.PR2014★ 3 cited

On site percolation in random quadrangulations of the half-plane

Jakob E. Björnberg, Sigurdur Örn Stefánsson

We study site percolation on uniform quadrangulations of the upper half plane. The main contribution is a method for applying Angel's peeling process, in particular for analyzing a…

math.PR2014★ 18 cited

Random walk on random infinite looptrees

Jakob E. Björnberg, Sigurdur Örn Stefánsson

Looptrees have recently arisen in the study of critical percolation on the uniform infinite planar triangulation. Here we consider random infinite looptrees defined as the local li…

math.PR2013★ 32 cited

Recurrence of bipartite planar maps

Jakob E. Björnberg, Sigurdur Orn Stefansson

This paper concerns random bipartite planar maps which are defined by assigning weights to their faces. The paper presents a threefold contribution to the theory. Firstly, we prove…