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math.CO2025

A proof of the -conjecture for independent domination in cubic graphs

Boštjan Brešar, Tanja Dravec, Michael A. Henning

A set of vertices in a graph is a dominating set of if every vertex not in is adjacent to a vertex in~. An independent dominating set in is a dominating set…

math.CO2025

On the isolation number of graphs with minimum degree four

Wayne Goddard, Michael A. Henning

An isolating set in a graph is a set of vertices such that removing and its neighborhood leaves no edge. The isolation number of (also known as the vertex-ed…

math.CO2025

On -coalition in graphs: bounds and exact values

Boštjan Brešar, Michael A. Henning, Babak Samadi

Given a graph $G=\big{(}V(G),E(G)\big{)}$, a set is called a -dominating set if every vertex in has at least neighbors in . Two disjoi…

math.CO2025

On polluted bootstrap percolation in Cartesian grids

Boštjan Brešar, Jaka Hedžet, Michael A. Henning

Given a graph and assuming that some vertices of are infected, the -neighbor bootstrap percolation rule makes an uninfected vertex infected if has at least i…

math.CO2025

Paired domination in trees: A linear algorithm and asymptotic normality

Michael A. Henning, Dimbinaina Ralaivaosaona

A set of vertices in a graph is a paired dominating set if every vertex of is adjacent to a vertex in and the subgraph induced by contains a perfect matching (n…

math.CO2025

Paired domination in graphs with minimum degree four

Csilla Bujtás, Michael A. Henning

A set of vertices in a graph is a paired dominating set if every vertex of is adjacent to a vertex in and the subgraph induced by admits a perfect matching. The…