2 problems

Let $\underset{9}{\Box}$ be the weak shuffle product defined by $C_{9}$. For positive integers $p$ and $n$, let $K_{(n,p)}$ denote the kernel defined in the paper. Vanishing-kernel…

Let $X$ be a countable alphabet and let the weak shuffle algebra and the objects in Proposition valzeroun be defined as in the paper. Countable-alphabet extension. Proposition valz…