Recent and upcoming talks by Yair Hayut

Yair Hayut: Strong compactness and the filter extension property

Talk held by Yair Hayut (KGRC) at the KGRC seminar on 2019-03-21. Abstract The notion of strongly compact cardinal is one of the earliest large cardinal axioms, yet it is still poorly understood. continue reading…

Yair Hayut: Chang’s conjecture

HUJI Set Theory Seminar November 21, 2018 Speaker: Yair Hayut Abstract. I will review some consistency results related to Chang’s Conjecture (CC). First I will discuss some classical results of deriving instances of CC from huge cardinals and the new results for getting instances of CC from supercompact cardinals, and present some open problems. continue reading…

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…