2 problems

Let $D(r)$ be a structure function of the form specified in the source, and let $f$ be a Bernstein function, meaning that $f\colon(0,\infty)\to\mathbb{R}$ is smooth, nonnegative, a…

Let $K_v$ denote the modified Bessel function of the second kind, and let $v$ be real with $|v|<1/2$. Baricz's conjecture. The function … is a Bernstein function on $(0,\infty)$. T…