Qinqi Wu

collaborators

3 papers

math.DS2026

Saturation for product systems of polynomials

Qinqi Wu, Jiaqi Yu

Recently, Qiu, Xu, Ye and Yu proved that for product system of finitely many minimal systems, the maximal $\infty$ -step pro-nilfactor of the system is the topological characteristi…

math.DS2025

CF-Nil systems and convergence of two-dimensional ergodic averages

Kangbo Ouyang, Qinqi Wu

A topological dynamical system $(X, T)$ is called CF-Nil( $k$ ) if it is strictly ergodic and the maximal measurable and maximal topological $k$ -step pro-nilfactors coincide as measur…

math.CO2025

Some negative answers to the Bergelson-Hindman's question

Qinqi Wu

Let $p_{1}, \dots, p_{d}$ be integral polynomials vanishing at $0$ . It was asked by Bergelson and Hindman whenever $A$ is large, whether the set $\{(m,n)\in \mathbb{N}^2:m+p_1(n),m+p_2(n…