activity
20162023
most citedOn Homomorphism Graphs

5 citations · 5 across the 7 of their papers we have counts for

collaborators

9 papers

math.CO2023

Local version of Vizing's theorem for multi-graphs

Clinton T. Conley, Jan Grebik, Oleg Pikhurko

Extending a result of Christiansen, we prove that every mutli-graph admits a proper edge colouring which is local, that is, $ϕ(e)\le \max\{d(x)+π(x…

math.LO2021★ 5 cited

On Homomorphism Graphs

Sebastian Brandt, Yi-Jun Chang, Jan Grebík +3

We introduce a new type of examples of bounded degree acyclic Borel graphs and study their combinatorial properties in the context of descriptive combinatorics, using a generalizat…

math.LO2021

Approximate Schreier decorations and approximate Kőnig's line coloring Theorem

Jan Grebik

Following recent result of L. M. T\' oth [arXiv:1906.03137] we show that every -regular Borel graph with a (not necessarily invariant) Borel probability measure a…

math.CO2021

Local Problems on Trees from the Perspectives of Distributed Algorithms, Finitary Factors, and Descriptive Combinatorics

Sebastian Brandt, Yi-Jun Chang, Jan Grebík +3

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 det…

math.LO2020

-Lacunary actions of Polish groups

Jan Grebik

We show that every essentially countable orbit equivalence relation induced by a continuous action of a Polish group on a Polish space is -lacunary. In combination with [Invent.…

math.LO2017

Borel selector for hypergraphons

Jan Grebik

We show that there is a Borel way of choosing a representative of a -uniform hypergraphon. This extends the result of Orbanz and Szegedy where this was shown for graphons.