Place: Fields Institute (Room 210)
Date: July 13 , 2018 (13:3015:00)
Speaker:
Title: Basis of Countryman lines
Abstract: U. Abraham and S. Shelah proved that it is consistent to have a 2 element basis for Countryman lines. J. T. Moore proved that, under PFA, these 2 Countryman lines serve as a basis for Aronszajn lines. We will show that for any positive integer $n$, it is consistent that the basis of Countryman lines has size $2^n$. We will also list some conditions that imply the basis to have maximal size – $2^{\omega_1}$.
Search
Recent seminar announcements
 Aleksandra Kwiatkowska: Universal minimal flows of the homeomorphism groups of Ważewski dendrites Prague Set Theory Seminar
 Jan Grebík: Borel chromatic numbers Prague Set Theory Seminar
 Yinhe Peng: Basis of Countryman lines Toronto Set Theory Seminar
 Assaf Shani: Borel equivalence relations and symmetric models Israeli Logic Talks
 Jindřich Zapletal: Geometric forcing Prague Set Theory Seminar
 Hossein Lamei Ramandi: A minimal Kurepa tree with respect to club embeddings Toronto Set Theory Seminar
 Wednesday seminar Prague Set Theory Seminar
 Ilya Shapirovsky: Locally finite varieties of modal algebras Toronto Set Theory Seminar
 Mirna Džamonja: Higher order versions of the logic of chains close Prague Set Theory Seminar
 Joshua Brot, Mengyang Cao, David J. FernándezBretón: Finiteness classes arising from Ramseytheoretic statements in set theory without choice Michigan Logic Seminar
Upcoming conferences
 July 23: Logic Colloquium 2018, Udine, July 23 – 28, 2018
 August 6: BLAST 2018, Denver, August 610, 2018
 August 22: Generalised Baire Spaces, Amsterdam, August 2224, 2018
 August 23: SetTheoretic Topology and Topological Algebra
 September 10: Set theory today, Vienna, September 1014, 2018
 September 18: Takeuti Memorial Symposium, Kobe, September 18 – 20, 2018

Talks by venue
 Barcelona Set Theory Seminar (RSS)
 Boise Set Theory Seminar (RSS)
 Bonn Logic Seminar (RSS)
 Bristol Logic Seminar (RSS)
 Budapest Logic Seminar (RSS)
 Carnegie Mellon Logic Seminar (RSS)
 Dartmouth Logic Seminar (RSS)
 Israeli Logic Talks (RSS)
 Kurt Godel Research Center (RSS)
 Logic Seminar in Turin (RSS)
 Michigan Logic Seminar (RSS)
 Morelia Topology and Set Theory Seminar (RSS)
 New York Logic Seminars (RSS)
 NUS logic seminar (RSS)
 Prague Set Theory Seminar (RSS)
 Rutgers Logic Seminar (RSS)
 Toronto Set Theory Seminar (RSS)
 UC Irvine Set Theory Seminar (RSS)
 Wrocław University of Technology (RSS)
Talks by speaker
Alan Dow Alekos Kechris Aleksander Cieślak Aleksandra Kwiatkowska Alessandro Vignati Alexei Kolesnikov Andreas Blass Andrés Caicedo Andrés Villaveces Andrew BrookeTaylor Andrew Marks Andy Zucker Antonio Avilés Anush Tserunyan Ari Brodsky Arthur Apter Asaf Karagila Asger Tornquist Ashutosh Kumar Assaf Hasson Assaf Rinot Barnabas Farkas Benjamin Miller Bill Chen Bill Mitchell Boban Velickovic Borisa Kuzeljevic Brent Cody Burak Kaya Carlos Di Prisco Carlos MartinezRanero Charles Morgan Chris LambieHanson Christian Rosendal Christina Brech Clinton Conley Daisuke Ikegami Damian Sobota Dana Bartošová Daniel Rodriguez Daniel Soukup David Aspero David Chodounsky David J. Fernández Bretón David Marker David Milovich David Schrittesser Diana Ojeda Diego Alejandro Mejia Dikran Dikranjan Dilip Raghavan Dima Sinapova Dimitrios Vlitas Egbert Thümmel Erez Shochat Erin Carmody François Dorais Frank Stephan Franklin Tall Garrett Ervin Giorgio Laguzzi Gregory Cherlin Grigor Sargsyan Grzegorz Plebanek Gunter Fuchs Heike Mildenberger Hiroshi Sakai Hugh Woodin Ilijas Farah Ioannis Souldatos Isaac Goldbring István Juhász Itay Neeman James Cummings Jan Grebík Jan van Mill Jay Williams Jean Larson Jindra Zapletal Jing Zhang Joan Bagaria Joel David Hamkins John Baldwin John Clemens John Krueger John Steel Jonathan Verner Jordi LopezAbad Jörg Brendle Jose Iovino Jouko Väänänen Julien Melleray Juliette Kennedy Juris Steprans Justin Moore K. P. Hart Konstantinos Tyros Lajos Soukup Laura Fontanella Liljana Babinkostova Liuzhen Wu Luca Motto Ros Luz María García Ávila Lynn Scow Lyubomyr Zdomskyy Marcin Michalski Marcin Sabok Marion Scheepers Martin Goldstern Martin Zeman Martino Lupini Maryanthe Malliaris Masaru Kada Matteo Viale Matthew D. Foreman Melvin Fitting Menachem Kojman Menachem Magidor Merlin Carl Michael Hrusak Michal Doucha Miguel Angel Mota Miha Habic Mikhail Tkachenko Miodrag Sokic Mirna Džamonja Miyamoto Tadatoshi Monroe Eskew Moti Gitik Nadav Meir Nam Trang Natasha Dobrinen Norman Perlmutter Omer Ben Neria Omer Mermelstein Osvaldo Guzman Osvaldo Guzmán González Paul Larson Paul McKenney Peng Yinhe Peter Holy Peter Koellner Peter Koepke Peter Krautzberger Petr Simon Philip Welch Philipp Lücke Philipp Schlicht Piotr BorodulinNadzieja Piotr Koszmider Radek Honzik Ralf Schindler Randall Holmes Rick Statman Robert Ralowski Robin TuckerDrob Rodrigo R. Dias Roman Kossak Saharon Shelah Sakaé Fuchino Salma Kuhlmann Samuel Coskey Sandra Müller Šárka Stejskalová Scott Cramer Scott Schneider Sean Cox Sebastien Vasey Sergei Artemov Shehzad Ahmed Simon Thomas Slawomir Solecki Spencer Unger Stefan Geschke Stevo Todorcevic Su Gao Sy David Friedman Szymon Zeberski Taras Banakh Teruyuki Yorioka Thilo Weinert Timothy Trujillo Todd Eisworth Todor Tsankov Tomek Bartoszynski Toshimichi Usuba Trevor Wilson Uri Abraham Vera Fischer Victor Torres Perez Victoria Gitman Vincenzo Dimonte Wieslaw Kubis Will Boney Wojciech Stadnicki Wolfgang Wohofsky Yair Hayut Yizheng Zhu Yurii Khomskii Zoltán VidnyánszkyCategories
Recent discussions
 GrothenDitQue: on Andrea Vaccaro: Embedding C*algebras into the Calkin algebra
 saf on Takeuti Memorial Symposium, Kobe, September 18 – 20, 2018
 saf on Set Theory, Model Theory and Applications (In memory of Mati Rubin), Eilat, April 2226, 2018
 GrothenDitQue: on Vincenzo Dimonte: The sensitive issue of iterability
 Thematic Semester on Descriptive Set Theory and Polish groups, More info  Set Theory Talks on 11th Young Set Theory Workshop, Lausanne, June 25–29, 2018
 GrothenDitQue: on Andrea Vaccaro: Embedding C*algebras into the Calkin algebra
Seminar organizer’s toolbox