# Algebra Seminar talk

2016-05-20

Otmar **Spinas** (Universität Kiel)*Tukey reductions*

Abstract:

I have the two results that the meager ideal is Tukey reducible to
the Mycielski ideal and that the Lebesgue null ideal consistently is not. In my
talk at the KGRC I will explain the main ideas of the proof of the first one,
in my Friday talk at the TU I will give some background of these results and
some basic ideas of the proof of the second one, especially how to construct a
Silver amoeba that does not add random reals.

Note: The talk at KGRC (Währinger Straße 25) will take place already on Thursday May 19 at 16:00.