3 problems

Let $\mathbb{M}$ be a weight sequence, and let (i), (ii), and (iii) denote the first three conditions in Theorem, concerning the existence of extension operators in the associated…

Let $\mathbb{M}$ be a weight sequence, and let $S_{\{\widehat{\mathbb{M}\}}}$, $\widetilde{S}^u_{\{\mathbb{M}\}}$, and $\widetilde{S}_{\{\mathbb{M}\}}$ denote the corresponding sur…

Let $\mathbb{M}$ be a strongly regular sequence. Define $\widetilde{S}_{\mathbb{M}}$ as the set of positive opening parameters for which the formal asymptotic Borel map is surjecti…