Ramsey’s theorem, , holds for the countable infinity and has many useful applications, but, as Sierpinski discovered, fails for the real line: . Strong anti-Ramsey relations are known on many uncountable cardinals and have application in general topology.   In the talk we … Continue reading Colloquium: Tuesday, October 25, 2022. Speaker: Menachem Kojman (Ben-Gurion). Title: “Positive Ramsey relations on uncountable sets”.