A note on $Oc{t}_1^{+}$-free graphs and $Oc{t}_2^{+}$-free graphs

Wenjian Jia, Shuai Kou, Chengfu Qin +1

Let $Oc{t}_1^{+}$ and $Oc{t}_2^{+}$ be the planar and non-planar graphs that obtained from the Octahedron by 3-splitting a vertex respectively. For $Oc{t}_1^{+}$, we prove that a 4…