activity
20092026
most citedSpectral radius of finite and infinite planar graphs and of graphs of bounded genus

31 citations · 256 across the 67 of their papers we have counts for

collaborators

98 papers

math.CO2026

Extremal function for rooted minors

Zdeněk Dvořák

We show that if an n-vertex 5-connected graph has at least 4n-10 edges, then for any choice of five of its vertices, we can contract disjoint connected subgraphs containing these v…

math.CO2023★ 1 cited

Correspondence coloring of random graphs

Zdenek Dvorak, Liana Yepremyan

We show that Erdős-Rényi random graphs with constant density have correspondence chromatic number ; this matches a prediction from linear Hadwige…

cs.DM2023

Maximum edge colouring problem on graphs that exclude a fixed minor

Zdeněk Dvořák, Abhiruk Lahiri

The maximum edge colouring problem considers the maximum colour assignment to edges of a graph under the condition that every vertex has at most a fixed number of distinct coloured…

math.CO2023

Embedded graph 3-coloring and flows

Caroline Bang, Zdeněk Dvořák, Emily Heath +1

A graph drawn in a surface is a near-quadrangulation if the sum of the lengths of the faces different from 4-faces is bounded by a fixed constant. We leverage duality between color…

math.CO2022★ 4 cited

Product structure of graph classes with strongly sublinear separators

Zdeněk Dvořák, David R. Wood

We investigate the product structure of hereditary graph classes admitting strongly sublinear separators. We characterise such classes as subgraphs of the strong product of a star…

cs.DM2022

Square roots of nearly planar graphs

Zdeněk Dvořák, Benjamin Moore, Abhiruk Lahiri

We prove that it is NP-hard to decide whether a graph is the square of a 6-apex graph. This shows that the square root problem is not tractable for squares of sparse graphs (or eve…