This series is devoted to thorough, yet reasonably concise treatments of topics in any branch of mathematics. Typically, a Tract takes up a single thread in a wide subject, and follows its ...
bullet$ D. BartoÅ¡ová and A. Kwiatkowska. The universal minimal flow of the homeomorphism group of the Lelek fan. Trans. Amer. Math. Soc., 371(10):6995–7027, 2019. $\bullet$ A. Kwiatkowska. Universal ...