4 problems

Let $r,m\in\mathbb N$, let $f(r,s_{1},s_{2})$ be the index bound occurring in the coefficient recursion, and let $\operatorname{sgn}$ be the signum function defined by … For…

Let $r,m\in\mathbb N$, let $f(r,s_{1},s_{2})$ be the index bound occurring in the coefficient recursion, and let $\delta_{mn}$ denote the Kronecker delta, with $\delta_{mm}=1$ and…

Let $r,m,j\in\mathbb N$, and let $f(r,s_{1},s_{2})$ be the index bound occurring in the coefficient recursion. For $0\leq m\leq f(r,s_{1},s_{2})$ and…

Let $a(r,m,\ell)$ be the coefficients appearing in the expansion under consideration. Boundary-sum conjecture. For $r\in\mathbb N$, … and … This is one of four conjectures suggeste…