Title: Moebius disjointness for models of an ergodic system and beyond Speaker: Mariusz Lemanczyk (Nicolaus Copernicus University, Toruń, Poland) Abstract: In 2010, P. Sarnak formulated the following conjecture: For each zero entropy topological system (X,T), we have $$ \lim_{N\to\infty}\frac1N\sum_{n\leq N}f(T^nx)\mu(n)\to 0$$ for each $f\in C(X)$ and $x\in X$. Here $\mu$ stands for the arithmetic Moebius function. The […]
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