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asked 5 years ago

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How to find the subgraph homeomorphic to K5 or K3,3?

Given a graph G it is easy to check whether the Graph is planar or not using the command "G.is_planar()"

However I am stuck on the following :

Given a non-planar graph G is it possible to find a subgraph of G which is homeomorphic to K5 or K3,3?

As per Kuratowski Theorem any Graph G is planar if and only if G has a subgraph homeomorphic to K5 or K3,3.

Is it possible to find the required subgraph using sagemath?