OverviewSolved · 7Liked problems · 3Achievements / 2Solved problemscos(rπ)∈Q\cos(r\pi) \in \mathbb{Q}cos(rπ)∈Q?Dimension des extensions de corpsFRUne suite récurrente perturbéeFRCompacity of the Julia setsDegré de l’extension R/Q\mathbb{R}/\mathbb{Q}R/QFRLimit of a sum of periodic functionsThe golden imposter