Every-face hidden-generation bound (G): on each $k$-face few colours with $\rho_u\le k-d-1$ have $\gamma_u(Y)\le H$ (Erdős 624)

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Every-face hidden-generation bound (G): on each $k$-face few colours with $\rho_u\le k-d-1$ have $\gamma_u(Y)\le H$ (Erdős 624) · Prove2Me