# Recent and upcoming talks by Otmar Spinas

## Otmar Spinas: Why Silver is special

Place:   Bahen Center BA6183 Date: May 25, 2018 (13:30-15:00) Speaker: Otmar Spinas Title:  Why Silver is special Abstract: I will try to give some insight into the challenging combinatorics of two amoeba forcings, one for Sacks forcing, the other one for Silver forcing. continue reading…

## Otmar Spinas: “Das Problem mit Silver Amoeba”

Monday, June 23, 2014, 16.30 Seminar room 0.011, Mathematical Institute, University of Bonn Speaker: Otmar Spinas (Kiel) Title: “Das Problem mit Silver Amoeba” Abstract: Ich werde die offene Frage eroertern, ob ein Amoeba für Silver-Forcing existiert, das keine Cohen reelle Zahlen adjungiert. continue reading…

## MFO workshop in Set Theory, Oberwolfach, January 2014

These are title of the talks from the 2014 Oberwolfach meeting. Below, are some of the slides. Brendle – Rothberger gaps in analytic quotients Conley – Measurable analogs of Brooks’s theorem for graph colorings Cramer – Inverse limit reflection and generalized descriptive set theory Cummings – Combinatorics at successors of singulars Dobrinen – Progress in topological Ramsey space theory Dzamonja – Combinatorial versions of SCH Fischer – Template iterations and maximal cofinitary groups Gitik – Short extenders forcings and collapses Golshani – The effects of adding a real to models of set theory Koepke – An Easton-like Theorem for ZF Set Theory Krueger – Forcing square with finite conditions Lupini – Borel complexity and automorphisms of $C^*$-algebras Melleray – Full groups of minimal homeomorphisms and descriptive set theory Mildenberger – Specialising Aronszajn trees in a gentle way Moore – Completely proper forcing and the Continuum Hypothesis Motto Ros – On the descriptive set-theoretical complexity of the embeddability relation on uncountable models Neeman – Higher analogues of PFA Rinot – Complicated Colorings Sabok – Automatic continuity for isometry groups Sargsyan – Core Model Induction and Hod Mice Schindler – Does $\Pi^1_1$  determinacy yield 0#? continue reading…