activity
20052023
most citedPartial Star Products: A Local Covering Approach for the Recognition of Approximate Cartesian Product Graphs

7 citations · 14 across the 15 of their papers we have counts for

collaborators

17 papers

math.CO2023

Asymmetrizing infinite trees

Wilfried Imrich, Rafał Kalinowski, Florian Lehner +2

A graph is asymmetrizable if it has a set of vertices whose setwise stablizer only consists of the identity automorphism. The motion of a graph is the minimum number of ver…

math.CO2019★ 6 cited

Bounds for Distinguishing Invariants of Infinite Graphs

Wilfried Imrich, Rafał Kalinowski, Monika Pilśniak +1

We consider infinite graphs. The distinguishing number of a graph is the minimum number of colours in a vertex colouring of that is preserved only by the trivial aut…

math.CO2019

Regular Graphs with Minimum Spectral Gap

M. Abdi, E. Ghorbani, W. Imrich

Aldous and Fill conjectured that the maximum relaxation time for the random walk on a connected regular graph with vertices is . This conjecture can…

math.CO2018

Distinguishing locally finite trees

Svenja Hüning, Wilfried Imrich, Judith Kloas +2

The distinguishing number of a graph is the smallest number of colors that is needed to color the vertices of such that the only color preserving automorphism is the…

math.CO2018

Distinguishing density and the Distinct Spheres Condition

Wilfried Imrich, Florian Lehner, Simon M. Smith

If a graph has distinguishing number 2, then there exists a partition of its vertex set into two parts, such that no nontrivial automorphism of fixes setwise the two parts.…

math.CO2017

Distinguishing graphs of maximum valence 3

Svenja Hüning, Wilfried Imrich, Judith Kloas +2

The distinguishing number of a graph is the smallest number of colors that is needed to color such that the only color preserving automorphism is the identity. We gi…