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Different types of two- and three-dimensional representations of a finite metric space are studied that focus on the accurate representation of the linear order among the distances rather than their actual values. Lower and upper bounds for…

组合数学 · 数学 2007-05-23 Jobst Heitzig

Weighted recursive trees are built by adding successively vertices with predetermined weights to a tree: each new vertex is attached to a parent chosen randomly proportionally to its weight. Under some assumptions on the sequence of…

概率论 · 数学 2021-12-16 Michel Pain , Delphin Sénizergues

For a tree with the given sequence of vertex degrees the spectral radius of its terminal distance matrix is shown to be bounded from below by the the average row sum of the terminal distance matrix of the, so called, BFS-tree (also known as…

组合数学 · 数学 2015-07-09 Mikhail Goubko

We establish maximal trees and graphs for the difference of average distance and proximity proving thus the corresponding conjecture posed in [4]. We also establish maximal trees for the difference of average eccentricity and remoteness and…

组合数学 · 数学 2020-10-22 Jelena Sedlar

The size of the largest common subtree (maximum agreement subtree) of two independent uniform random binary trees on $n$ leaves is known to be between orders $n^{1/8}$ and $n^{1/2}$. By a construction based on recursive splitting and…

概率论 · 数学 2022-01-11 David J. Aldous

It is well-known that the height profile of a critical conditioned Galton-Watson tree with finite offspring variance converges, after a suitable normalization, to the local time of a standard Brownian excursion. In this work, we study the…

概率论 · 数学 2021-06-22 Gabriel Berzunza Ojeda , Svante Janson

We consider spanning trees of $n$ points in convex position whose edges are pairwise non-crossing. Applying a flip to such a tree consists in adding an edge and removing another so that the result is still a non-crossing spanning tree.…

计算几何 · 计算机科学 2023-03-15 Nicolas Bousquet , Valentin Gledel , Jonathan Narboni , Théo Pierron

We prove a law of large numbers for the range of rotor walks with random initial configuration on regular trees and on Galton-Watson trees. More precisely, we show that on the classes of trees under consideration, even in the case when the…

概率论 · 数学 2019-04-03 Wilfried Huss , Ecaterina Sava-Huss

Diestel and M\"uller showed that the connected tree-width of a graph $G$, i.e., the minimum width of any tree-decomposition with connected parts, can be bounded in terms of the tree-width of $G$ and the largest length of a geodesic cycle in…

组合数学 · 数学 2017-02-15 Matthias Hamann , Daniel Weißauer

Let $\Omega_n$ be the family of binary trees on $n$ vertices obtained by identifying the root of an rgood binary tree with a vertex of maximum eccentricity of a binary caterpillar. In the paper titled "On different middle parts of a tree…

组合数学 · 数学 2020-09-28 Dinesh Pandey , Kamal Lochan Patra

We obtain sharp lower and upper bounds for the number of maximal (under inclusion) independent sets in trees with fixed number of vertices and diameter. All extremal trees are described up to isomorphism.

组合数学 · 数学 2008-12-31 Alexander Dainiak

Given two distributions $P$ and $S$ of equal total mass, the Earth Mover's Distance measures the cost of transforming one distribution into the other, where the cost of moving a unit of mass is equal to the distance over which it is moved.…

计算几何 · 计算机科学 2023-02-20 Marc van Kreveld , Frank Staals , Amir Vaxman , Jordi Vermeulen

The last decade brought a significant increase in the amount of data and a variety of new inference methods for reconstructing the detailed evolutionary history of various cancers. This brings the need of designing efficient procedures for…

数据结构与算法 · 计算机科学 2020-04-30 Giulia Bernardini , Paola Bonizzoni , Paweł Gawrychowski

This extended abstract is dedicated to the analysis of the height of non-plane unlabelled rooted binary trees. The height of such a tree chosen uniformly among those of size $n$ is proved to have a limiting theta distribution, both in a…

组合数学 · 数学 2008-07-16 Nicolas Broutin , Philippe Flajolet

The cobordism distance on the knot concordance group is used to define a measure of how close two knots are to being linearly dependent. Roughly stated, d(K,J) is defined by minimizing the cobordism distance between pairs of knots in cyclic…

几何拓扑 · 数学 2024-11-20 Charles Livingston

Given a Galton-Watson process conditioned to have total progeny equal to $n$, we study the asymptotic probability that this conditioned Galton-Watson process has distance to the border bigger or equal than $k$, as the number of nodes $n…

概率论 · 数学 2025-03-05 Víctor J. Maciá

Analysing statistical properties of the normal forms of random braids, we observe that, except for an initial and a final region whose lengths are uniformly bounded (that is, the bound is independent of the length of the braid), the…

群论 · 数学 2014-06-24 Volker Gebhardt , Stephen Tawn

We consider a multivariate distributional recursion of sum-type as arising in the probabilistic analysis of algorithms and random trees. We prove an upper tail bound for the solution using Chernoff's bounding technique by estimating the…

概率论 · 数学 2011-06-21 Goetz Olaf Munsonius

We comment on old and new results related to the destruction of a random recursive tree (RRT), in which its edges are cut one after the other in a uniform random order. In particular, we study the number of steps needed to isolate or…

概率论 · 数学 2016-12-28 Erich Baur , Jean Bertoin

An ordered labeled tree is a tree in which the nodes are labeled and the left-to-right order among siblings is relevant. The edit distance between two ordered labeled trees is the minimum cost of changing one tree into the other through a…

数据结构与算法 · 计算机科学 2015-02-10 Shihyen Chen