2 problems

Let $\mathcal{C}$ be a sum-closed and $rc$-invariant permutation class. Let $\operatorname{gr}(\mathcal{C})$ denote its growth rate and $\operatorname{gr}^{rc}(\mathcal{C})$ the gr…

Let $\mathcal{C}$ be a permutation class. Write $\overline{\operatorname{gr}}(\mathcal{C})$ for its upper growth rate and $\overline{\operatorname{gr}}^{rc}(\mathcal{C})$ for the u…