Refining a chain theorem from matroids to internally 4-connected graphs

Refining a chain theorem from matroids to internally 4-connected graphs

Chanun Lewchalermvongs, Guoli Ding

Graph theory and matroid theory are interconnected with matroids providing a way to generalize and analyze the structural and independence properties within graphs. Chain theorems, vital tools in both matroid and graph theory, enable the analysis of matroid structures associated with graphs. In a significant contribution, Chun, Mayhew, and Oxley [2] established a chain theorem for internally 4-connected binary matroids, clarifying the operations involved. Our research builds upon this by specifying the matroid result to internally 4-connected graphs. The primary goal of our research is to refine this chain theorem for matroids into a chain theorem for internally 4-connected graphs, making it more accessible to individuals less acquainted with matroid theory.

Feb 2025, In: Advances in Applied Mathematics. 163, 102802.