Descriptive combinatorics, computable combinatorics, and ASI algorithms

L Qian, F Weilacher - arXiv preprint arXiv:2206.08426, 2022 - arxiv.org
We introduce new types of local algorithms, which we call" ASI Algorithms", and use them to
demonstrate a link between descriptive and computable combinatorics. This allows us to …

Continuous combinatorics of abelian group actions

S Gao, S Jackson, E Krohne, B Seward - arXiv preprint arXiv:1803.03872, 2018 - arxiv.org
This paper develops techniques which are used to answer a number of questions in the
theory of equivalence relations generated by continuous actions of abelian groups. The …

Hyperfiniteness and borel asymptotic dimension of boundary actions of hyperbolic groups

P Naryshkin, A Vaccaro - arXiv preprint arXiv:2306.02056, 2023 - arxiv.org
We give a new short proof of the theorem due to Marquis and Sabok, which states that the
orbit equivalence relation induced by the action of a finitely generated hyperbolic group on …

Definable K\H {o} nig theorems

M Bowen, F Weilacher - arXiv preprint arXiv:2112.10222, 2021 - arxiv.org
Let $ X $ be a Polish space with Borel probability measure $\mu, $ and let $ G $ be a Borel
graph on $ X $ with no odd cycles and maximum degree $\Delta (G). $ We show that the …

[图书][B] Descriptive combinatorics and Ramsey theory

M Bowen - 2023 - search.proquest.com
This thesis comprises two parts, each consisting of three articles. In the first part we will use
techniques inspired by measurable and topological dynamics to solve problems in finite …

[PDF][PDF] DEFINABLE VIZING THEOREMS

L QIAN, F WEILACHER - math.cmu.edu
In this note, we show that if G is a Borel graph of finite maximum degree, then its Baire
measurable edge chromatic number is at most 1 more than its (discrete) edge chromatic …