5 problems

Hatano–Tsunekawa conjecture. For every $s\ge 1$,

Kraaijevanger–MacDonald–Gottlieb conjecture. For every such method,

Let $\mathcal{K}(r)$ denote the complete elliptic integral of the first kind and define … A function is absolutely monotonic on an interval if all of its derivatives are nonnegativ…

Positivity rigidity conjecture. Then $p_0\geq 0$, and for $m=1,2,\ldots,s+1$,

Let $s\geq 2$, and let $\widehat{R}_{s/s,3}$ denote the maximal radius of absolute monotonicity in the restricted rational-function class used by the paper. Third-order diagonal ra…