Finite subgraphs of an extension graph

Sang-hyun Kim, Thomas Koberda, Juyoung Lee

Let $\Gamma$ be a finite graph and let ${\Gamma }^{\mathrm{e}}$ be its extension graph. We inductively define a sequence $\{{\Gamma }_i\}$ of finite induced subgraphs of ${\Gamma }^{\mathrm{e}}$ through succes…