# Recent and upcoming talks by Yair Hayut

## Yair Hayut: Stationary reflection at $\aleph_{\omega+1}$

Talk held by Yair Hayut (Tel-Aviv University, Israel) at the KGRC seminar on 2018-05-17. Abstract: Stationary reflection is one of the basic prototypes of reflection phenomena, and its failure is related to many counterexamples for compactness properties (such as almost free non-free abelian groups, and more). continue reading…

## Yair Hayut: Filter compactness and squares

BIU seminar in Set Theory April 8, 2018 Speaker: Yair Hayut (TAU) Title: Filter compactness and squares Abstract. Strongly compact cardinals are characterized by the property that any $\kappa$-complete filter can be extended to a $\kappa$-complete ultrafilter. continue reading…

## Yair Hayut: Subcompact cardinals

TAU forcing seminar On 04/Dec/17, 9-11, Yair Hayut will be speaking on Subcompact cardinals. Abstract. During the investigation of the existence of squares in core models, Jensen isolated the concept of subcompact cardinals. continue reading…

## Yair Hayut: Chang’s Conjecture at many cardinals simultaneously

HUJI Logic Seminar This Wednesday, 22 November, we will have a meeting of the Logic Seminar. The meeting will be in Math 209, 22 November (Wednesday), 11:00 – 13:00.   Speaker: Yair Hayut Title: Chang’s Conjecture at many cardinals simultaneously Abstract. continue reading…

## Yair Hayut: Magidor cardinal and Magidor filters

BIU seminar in Set Theory On 30/10/2017, 13-15, Building 505, Room 65 Speaker: Yair Hayut (TAU) Title: Magidor cardinal and Magidor filters Abstract. In this talk I will define the notion of Magidor Cardinal (\omega bounded Jonsson cardinal) which is a generalization of Jonsson cardinal. continue reading…

## MFO workshop in Set Theory, Oberwolfach, February 2017

Set Theory (Workshop ID: 1707) 12 Feb – 18 Feb 2017 Organisers Ilijas Farah, Toronto Sy-David Friedman, Wien Ralf Schindler, Münster Hugh Woodin, Cambridge MA continue reading…

## 6th European Set Theory Conference, Budapest, July 3–7, 2017

The 6th European Set Theory Conference (6ESTC) of the European Set Theory Society will be organized in Budapest, at the Alfréd Rényi Institute of Mathematics of the Hungarian Academy of Sciences, next year, July 3 – 7, 2017. continue reading…

## Large Cardinals and Strong Logics: September 5 through December 16

Dear colleague, We would like to inform you about the forthcoming CRM Intensive Research Program on Large Cardinals and Strong Logics, to be held from September 5 to December 16, 2016. continue reading…

## High and low forcing, San Jose, Jan 11 – 15, 2016

High and low forcing January 11 to January 15, 2016 at the American Institute of Mathematics, San Jose, California organized by Itay Neeman and Dima Sinapova This workshop, sponsored by AIM and the NSF, is devoted to new methods of forcing, in infinitary combinatorics, and in connection with axioms about the real line. continue reading…

## Yair Hayut: Stationary reflection at successors of singulars

Forcing seminar (Tel Aviv University) Yair Hayut will speak this Tuesday (8/7/14) (9:10-11, Schreiber 209) his abstract : Stationary reflection at successors of singulars I will show how to get, starting with ω supercompact cardinals, a model in which every stationary set at some specific, predefined, successor of singular reflects. continue reading…