Shalom,

The next meeting of the seminar in Logic, Set Theory and Topology will be held

on Tuesday, November 13.

Time is 16:00 – 17:30.

Place: seminar room 201 which is located in the building of Computer

Science Department (not Math Dept)

Speaker :Asaf Karagila (HUJI)

Title: Finite Width of the Cardinals Implies Choice.

Abstract:

We continue the previous lecture in our discussion about the ordering of cardinals in models where the axiom of choice fails. We will see this time that if either ≤ or ≤∗ has some fixed finite k such that every antichain has less than k members, then the axiom of choice holds. We will also discuss some of the questions left open.

The material also appears on the following page.