From the Ingham--Jessen property to mixed-mean inequalities

Jacek Chudziak, Zsolt Páles, Paweł Pasteczka

For every symmetric mean $\mathcal{M}:{\bigcup }_{n=1}^{\infty }{I}^n\to I$ (where $I$ an interval) and a nonzero function $W:\{1,\dots ,n\}\to \mathbb{N}\cup \{0\}$, defi…