Lower bounds for maximal matchings and maximal independent sets

A Balliu, S Brandt, J Hirvonen, D Olivetti… - Journal of the ACM …, 2021 - dl.acm.org
There are distributed graph algorithms for finding maximal matchings and maximal
independent sets in O (Δ+ log* n) communication rounds; here, n is the number of nodes …

Local conflict coloring revisited: Linial for lists

Y Maus, T Tonoyan - arXiv preprint arXiv:2007.15251, 2020 - arxiv.org
Linial's famous color reduction algorithm reduces a given $ m $-coloring of a graph with
maximum degree $\Delta $ to a $ O (\Delta^ 2\log m) $-coloring, in a single round in the …

Local problems on trees from the perspectives of distributed algorithms, finitary factors, and descriptive combinatorics

S Brandt, YJ Chang, J Grebík, C Grunau… - arXiv preprint arXiv …, 2021 - arxiv.org
We study connections between distributed local algorithms, finitary factors of iid processes,
and descriptive combinatorics in the context of regular trees. We extend the Borel …

Distributed∆-coloring plays hide-and-seek

A Balliu, S Brandt, F Kuhn, D Olivetti - … of the 54th Annual ACM SIGACT …, 2022 - dl.acm.org
We prove several new tight or near-tight distributed lower bounds for classic symmetry
breaking problems in graphs. As a basic tool, we first provide a new insightful proof that any …

Distributed lower bounds for ruling sets

A Balliu, S Brandt, D Olivetti - SIAM Journal on Computing, 2022 - SIAM
Given a graph G=(V,E), an (α,β)-ruling set is a subset S⊆V such that the distance between
any two vertices in S is at least α, and the distance between any vertex in V and the closest …

Distributed graph coloring made easy

Y Maus - ACM Transactions on Parallel Computing, 2023 - dl.acm.org
In this article, we present a deterministic algorithm to compute an O (k Δ)-vertex coloring in O
(Δ/k)+ log* n rounds, where Δ is the maximum degree of the network graph and k≥ 1 can be …

Locally checkable problems in rooted trees

A Balliu, S Brandt, D Olivetti, J Studený… - Proceedings of the …, 2021 - dl.acm.org
Consider any locally checkable labeling problem Π in rooted regular trees: there is a finite
set of labels Σ, and for each label χ x Σ we specify what are permitted label combinations of …

The complexity landscape of distributed locally checkable problems on trees

YJ Chang - arXiv preprint arXiv:2009.09645, 2020 - arxiv.org
Recent research revealed the existence of gaps in the complexity landscape of locally
checkable labeling (LCL) problems in the LOCAL model of distributed computing. For …

Locally checkable labelings with small messages

A Balliu, K Censor-Hillel, Y Maus, D Olivetti… - arXiv preprint arXiv …, 2021 - arxiv.org
A rich line of work has been addressing the computational complexity of locally checkable
labelings (LCLs), illustrating the landscape of possible complexities. In this paper, we study …

The landscape of distributed complexities on trees and beyond

C Grunau, V Rozhoň, S Brandt - … of the 2022 ACM Symposium on …, 2022 - dl.acm.org
We study the local complexity landscape of locally checkable labeling (LCL) problems on
constant-degree graphs with a focus on complexities below log* n. Our contribution is …