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 …

Classification of distributed binary labeling problems

A Balliu, S Brandt, Y Efron, J Hirvonen, Y Maus… - arXiv preprint arXiv …, 2019 - arxiv.org
We present a complete classification of the deterministic distributed time complexity for a
family of graph problems: binary labeling problems in trees. These are locally checkable …

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 …

Truly tight-in-Δ bounds for bipartite maximal matching and variants

S Brandt, D Olivetti - Proceedings of the 39th Symposium on Principles …, 2020 - dl.acm.org
In a recent breakthrough result, Balliu et al.[FOCS'19] proved a deterministic Ω (min (Δ, log
n/log log n))-round and a randomized Ω (min (Δ, log log n/log log log n))-round lower bound …

Online Locality Meets Distributed Quantum Computing

A Akbari, X Coiteux-Roy, F d'Amore, FL Gall… - arXiv preprint arXiv …, 2024 - arxiv.org
We extend the theory of locally checkable labeling problems (LCLs) from the classical
LOCAL model to a number of other models that have been studied recently, including the …