Recent and upcoming talks by Egbert Thümmel

Egbert Thümmel: Ramsey analytic ideals

The seminar meets on Wednesday January 17th at 11:00 in the Institute of Mathematics CAS, Zitna 25, seminar room, 3rd floor, front building. Program: Egbert Thümmel — Ramsey analytic ideals It is an open problem whether analytic tall ideals can be Ramsey. continue reading…

Egbert Thümmel and Boriša Kuzeljević: the P-ideal dichotomy

Dear all, The seminar meets on Wednesday November 1st at 11:00 in the Institute of Mathematics CAS, Zitna 25, seminar room, 3rd floor, front building. Program: Egbert Thümmel and Boriša Kuzeljević will review some classical as well as new facts and applications of the P-ideal dichotomy (PID). continue reading…

Egbert Thümmel: Semiselective and distributive ideals on omega

Wednesday, January 28, 2015, 11:00 Prague – CTS Speaker: Egbert Thümmel Title: Semiselective and distributive ideals on omega continue reading…

Egbert Thümmel: Reaping number and π-weight in exponent Boolean algebras

Wednesday, June 25, 2014, 11:00 Prague – CTS Speaker: Egbert Thümmel Title: Reaping number and π-weight in exponent Boolean algebras continue reading…

Egbert Thümmel: Non-homogeneity of extremally disconnected compact spaces

Wednesday, June 11, 2014, 11:00 Prague – CTS Speaker: Egbert Thümmel Title: Non-homogeneity of extremally disconnected compact spaces continue reading…

Egbert Thümmel: More on Todorcevic ordering

Wednesday, May 7, 2014, 11:00 Prague – CTS Speaker: Egbert Thümmel Title: More on Todorcevic ordering continue reading…

Jan Grebík, Jan Starý, Egbert Thümmel: TBA

Wednesday, April 30, 2014, 11:00 Prague – CTS Speaker: Jan Grebík, Jan Starý, Egbert Thümmel Title: TBA continue reading…

E. Thuemmel, J. Verner: Exponent & Generalized Grigorieff Forcing

Wednesday, January 8, 2014, 11:00 Prague – Zitna, seminar room 3rd floor Speaker: E. Thuemmel, J. Verner Title: Exponent & Generalized Grigorieff Forcing Abstract: M. Hrušák asked whether every tall Borel (analytic) ideal contains a tall F-sigma ideal. continue reading…

Egbert Thümmel: Applications of the Exponent algebra

Wednesday, December 11, 2013, 11:00 Prague – Zitna, seminar room 3rd floor Speaker: Egbert Thümmel Title: Applications of the Exponent algebra Abstract: Several applications of the exponent construction of Boolean algebras will be presented. continue reading…

Egbert Thümmel: Todorcevic orderings and ‘condition 1’ for the Hechler algebra

Wednesday, October 16, 2013, 11:00 Prague – CTS Speaker: Egbert Thümmel Title: Todorcevic orderings and ‘condition 1’ for the Hechler algebra continue reading…