3 problems

Let $G$) be a residually finite finitely presented group. For a finitely presented group $G$, its deficiency $\delta(G)$ is the maximum of $|X|-|R|$ over all presentations…

Complete-graph deficiency conjecture. For any $q\in\mathbb{Z}_+$,

Bouchard–Hertz–Desaulniers conjecture. For every graph $G$,