Polychromatic colorings of the first uncountable cardinal

Seminar
Set Theory
Speaker
Dani Livne (BGU)
Date
17/11/2013 - 10:10Add to Calendar 2013-11-17 10:10:00 2013-11-17 10:10:00 Polychromatic colorings of the first uncountable cardinal We shall provide sufficient conditions for the existence of a function f:[w1]2→w1 satisfying the following: f is 2-to-1; f restricted to any uncountable square [X]2 is not injective.   Lecture Notes אוניברסיטת בר-אילן - המחלקה למתמטיקה mathoffice@math.biu.ac.il Asia/Jerusalem public
Abstract

We shall provide sufficient conditions for the existence of a function f:[w1]2→w1 satisfying the following:

  • f is 2-to-1;
  • f restricted to any uncountable square [X]2 is not injective.
     

Lecture Notes

תאריך עדכון אחרון : 28/11/2013