3 papers
math.CO2026
Variants of Merge-Width and Applications
Karolina Drabik, Maël Dumas, Colin Geniet +3
Merge-width is a recently introduced family of graph parameters that unifies treewidth, clique-width, twin-width, and generalised colouring numbers. We prove the equivalence of sev…
math.CO2026
Flips and Merge-Width in Sparse Graphs
Karolina Drabik, Maël Dumas, Nikolas Mählmann +2
A flip of a graph is obtained by complementing the edge relation within a set of vertices. Flips are typically used to separate vertices in a graph, by increasing the distances bet…
cs.FL2025
Fine-Grained Complexity of Ambiguity Problems on Automata and Directed Graphs
Karolina Drabik, Anita Dürr, Fabian Frei +2
In the field of computational logic, two classes of finite automata are considered fundamental: deterministic and nondeterministic automata (DFAs and NFAs). In a more fine-grained…