Former visitors

The current visitors can be found here.

2024

  • David Schrittesser (Harbin Institute of Technology, Harbin, CN; Feb-Mar); host: Vera Fischer
  • Aleksandra Kwiatkowska (U of Münster, DE, March); host: Aristotelis Panagiotopoulos
  • Tobias Kaiser (U of Passau, DE, March); host: Matthias Aschenbrenner
  • Krzysztof Krupiński (U Wrocławski, PL, March); host: Matthias Aschenbrenner
  • Lukas Schembecker (U Wien, Jan-Mar); Vera Fischer
  • Martin Hils (U of Münster, DE, March); host: Matthias Aschenbrenner
  • Alexi Block Gorman (Ohio State U, Columbus, US, March); host: Matthias Aschenbrenner
  • Elliot Kaplan (McMaster U, Hamilton, CA, March); host: Nigel Pynn-Coates
  • Yurii Khomskii (Amsterdam U College, NL + U Hamburg, DE, January); host: Vera Fischer
  • Aleksander Cieślak (Wrocław U of Technology, PL; January); host: Damian Sobota
  • David Schrittesser (Harbin Institute of Technology, Harbin, CN; Dec-Jan); host: Vera Fischer
  • Diego A. Mejía (Shizuoka U, JP, Nov–Jan); host: Vera Fischer

2023

  • Clifton Ealy (Western Michigan U, Macomb, US; Dec–Aug 2024); host: Matthias Aschenbrenner
  • André Nies (U of Auckland, NZ, December); host: Matthias Aschenbrenner
  • Piotr Kowalski (U Wrocławski, PL, December); host: Vera Fischer
  • David Asperó (U of East Anglia, Norwich, UK, December); host: Monroe Eskew
  • Serhii Bardyla (Pavol Jozef Šafárik U in Košice, SK; November); host: Vera Fischer
  • Anton Bernshteyn (Georgia Institute of Technology, Atlanta, US; October); host: Vera Fischer
  • Radek Honzík (Charles U, Prague, CZ; October); host: Vera Fischer
  • Šárka Stejskalová (Charles U, Prague, CZ; October); host: Vera Fischer
  • Roman Kossak, (CUNY Graduation Center, New York, US ); host: Vera Fischer
  • Giovanni Soldà (Ghent U, BE; September); host: Juan Aguilera
  • Andreas Weiermann (Ghent U, BE; September); host: Juan Aguilera
  • Lou van den Dries (U of Illinois, Urbana-Champaign, US; September); host: Matthias Aschenbrenner
  • Diana Carolina Montoya Amaya (TU Vienna; Mar-Sept); host: Vera Fischer
  • Philip Welch (U of Bristol, UK; August); host: Juan Aguilera
  • Noam Greenberg (Victoria U of Wellington, NZ; August); host: Juan Aguilera
  • Robert Lubarsky (Florida Atlantic U, US; July); host: Juan Aguilera
  • Radek Honzík (Charles U, Prague, CZ; July); host: Vera Fischer
  • Šárka Stejskalová (Charles U, Prague, CZ; July); host: Vera Fischer
  • Aristotelis Panagiotopoulos (Carnegie Mellon U, US; July); host: Matthias Aschenbrenner
  • Fedor Pakhomov (Ghent U, NL and Russian Academy of Sciences, Moscow, RU; July); host: Juan Aguilera
  • David Schrittesser (Harbin Institute of Technology, Harbin, CN; June–September); host: Vera Fischer
  • Yurii Khomskii (Amsterdam U College, NL and Universität Hamburg, DE; June); host: Vera Fischer
  • Serhii Bardyla (Pavol Jozef Šafárik U Košice, SK; June); host: Vera Fischer
  • Jaroslav Šupina (U of Košice, SK; June); host: Vera Fischer
  • Jindřich Zapletal (U of Florida, US; June); host: Vera Fischer
  • Ido Feldman (Bar-Ilan U, Ramat Gan, IL; June); host: Miguel Moreno
  • Fabian Kaak (Kiel U, DE; May); host: Vera Fischer
  • Aaron Anderson (U of California, Los Angeles, US; May); host: Matthias Aschenbrenner
  • Sergei Starchenko (U of Notre Dame, US; May); host: Matthias Aschenbrenner
  • Nigel Pynn-Coates (Ohio State U, US; June); host: Matthias Aschenbrenner
  • Thilo Weinert (U Wien; May–June); host: Vera Fischer
  • Heike Mildenberger (U of Freiburg, DE; May); host: Vera Fischer
  • Zoltán Vidnyánszky (Eötvös Loránd U, HU; April); host: Vera Fischer
  • Fabian Kaak (ETH Zurich, CH; May); host: Vera Fischer
  • Tomasz Żuchowski (U of Wroclaw, PL; April); host: Damian Sobota
  • Sergei Starchenko (U of Notre Dame, US; April); host: Matthias Aschenbrenner
  • Franz-Viktor Kuhlmann (U of Szczecin, PL; March); host: Matthias Aschenbrenner
  • Chieu-Minh Tran (National U of Singapore, SG; March); host: Matthias Aschenbrenner
  • Silvain Rideau-Kikuchi (U Paris Diderot, Paris, FR; March); host: Matthias Aschenbrenner
  • Lou van den Dries (U of Illinois, Urbana-Champaign, US; March); host: Matthias Aschenbrenner
  • Juris Steprāns (York U, CA; March); host: Vera Fischer
  • Katrin Tent (Westfälische Wilhelms-U, DE; March); host: Matthias Aschenbrenner
  • Manuel López-Pellicer (U Politècnica de València, ES; February/March); host: Damian Sobota
  • Jerzy Kąkol (Adam Mickiewicz U, Poznań, PL; February/March); host: Damian Sobota
  • Jonathan Schilhan (U of Leeds, UK; January); host: Thilo Weinert
  • Tomasz Żuchowski (U of Wrocław, PL; January); host: Damian Sobota

2022

  • Clifton Ealy (Western Michigan U, Macomb, US; Dec–Aug 2023); host: Matthias Aschenbrenner
  • Wiesław Kubiś (Czech Academy of Sciences, CZ; December); host: Damian Sobota
  • Stefan Ludwig (ENS Paris, FR; December); hosts: Martin Hils and Matthias Aschenbrenner
  • Jan Hubička (Charles U, Prague, CZ; December); host: Vera Fischer
  • David Chodounský (Czech Academy of Sciences, CZ; December); host: Vera Fischer
  • Franz-Viktor Kuhlmann (U of Szczecin, PL; November–January 2023); host: Matthias Aschenbrenner
  • Simone Ramello (U of Münster, DE; November); hosts: Martin Hils and Matthias Aschenbrenner
  • Will Brian (U of North Carolina at Charlotte, US; November); host: Vera Fischer
  • Jonathan Schilhan (U of Leeds, GB; November); host: Thilo Weinert
  • Andrew Brooke-Taylor (U of Leeds, GB; October); host: Vera Fischer
  • Martin Hils (U Münster, DE; October–March 2023); host: Matthias Aschenbrenner
  • David Chodounský (Czech Academy of Sciences, CZ; September); host: Thilo Weinert
  • Leandro Aurichi (U of São Paulo, BR; July); host: Lyubomyr Zdomskyy
  • Frank Tall (U of Toronto, CA; July); host: Lyubomyr Zdomskyy
  • Peter Nyikos (U of South Carolina, US; July); host: Lyubomyr Zdomskyy
  • Jeffrey Bergfalk (U of Barcelona, ES; July); host: Vera Fischer
  • Justin Moore (Cornell U, Ithaca, US; July); host: Vera Fischer
  • Severin Mejak (U of Copenhagen, DK; July); hosts: Vera Fischer, David Schrittesser
  • Natasha Dobrinen (U of Denver, US; July); host: Vera Fischer
  • Alessandro Vignati (U of Paris, FR; Jun-Jul); host: Vera Fischer
  • Gunter Fuchs (City U of New York, US; June); host: Vera Fischer
  • Jaroslav Šupina (Pavol Jozef Šafárik U, Košice, Slovakia; June); host: Serhii Bardyla
  • Luke Elliott (U of St Andrews, Scotland, UK; May); host: Lyubomyr Zdomskyy
  • Yann Peresse (U of Hertfordshire, UK; May); host: Serhii Bardyla
  • James Mitchell (U of St Andrews, Scotland, UK; May); host: Vera Fischer
  • Jonathan Cancino (Czech Academy of Sciences, CZ; May); host: Vera Fischer
  • Marta Maloid-Glebova (Ivan Franko National U of Lviv, UA; May); host: Lyubomyr Zdomskyy
  • David Schrittesser (U of Toronto, Canada; May–Aug); host: Vera Fischer
  • Miguel Antonio Cardona Montoya (Pavol Jozef Šafárik U, Košice, SK; May); host: Vera Fischer
  • Tobias Kaiser (U of Passau, DE; April); host: Matthias Aschenbrenner
  • Stefan Hoffelner (U of Münster, DE; March); hosts: Vera Fischer, Matthias Aschenbrenner
  • Piotr Borodulin-Nadzieja (U of Wroclaw, PL; March); host: Damian Sobota
  • Jonathan Cancino (Czech Academy of Sciences, CZ; March); host: Vera Fischer
  • Radek Honzik (Charles U, Prague, CZ; February); host: Sy-David Friedman
  • Šárka Stejskalová (Charles U, Prague, CZ; February); host: Sy-David Friedman
  • Natasha Dobrinen (Uof Denver, Colorado, USA; January); host: Vera Fischer

2021

  • Clifton Ealy (Western Illinois U, Macomb, US; Dec–Aug2022); host: Benjamin Miller
  • Martin Hils (U of Münster, DE; December 2021); host: Matthias Aschenbrenner
  • Radek Honzik (Charles University,Prague, CZ; November); host: Vera Fischer
  • Gunter Fuchs (City College of New York, US; January); host: Vera Fischer
  • Jaroslav Šupina (Pavol Jozef Šafárik U, Košice, SK; October); host: Serhii Bardyla
  • Fortunato Maesano (University of Messina, IT; November–June 2022); host: Lyubomyr Zdomskyy
  • Chris Lambie-Hanson (Czech Academy of Sciences, Prague CZ; October); hosts: Jeffrey Bergfalk, Vera Fischer
  • Vladimir Tkachuk (Auburn U, Alabama, US; October); host: Vera Fischer
  • Jerzy Kąkol (Adam Mickiewicz U, Poznań, PL; September); host: Damian Sobota
  • Radek Honzík (Charles U, Prague, CZ; July); host: Vera Fischer
  • Sergei Starchenko (U of Notre Dame du Lac, US; July); host: Matthias Aschenbrenner

2020

  • Ziemowit Kostana (University of Warsaw, Poland; October); host: Noé de Rancourt
  • Colin Jahel (University of Lyon, France; October); host: Noé de Rancourt - visit canceled due to COVID travel restrictions; he gives his talk via Zoom.
  • Jerzy Kąkol (Adam Mickiewicz University, Poznań, Poland; October); host: Damian Sobota - visit canceled due to COVID travel restrictions
  • Jaroslav Šupina (Pavol Jozef Šafárik University, Košice, Slovakia; September 2020–February 2021); hosts: Vera Fischer, Lyubomyr Zdomskyy
  • Dušan Repovš (University of Ljubljana, Slovenia; August); host: Lyubomyr Zdomskyy
  • Otmar Spinas (University of Kiel, Schleswig-Holstein, Germany; July); host: Vera Fischer
  • Clifton Ealy (Western Illinois University, Macomb, USA; May-June); host: Benjamin Miller
  • Neil Barton (University of Konstanz, Germany; February); host: Sy-David Friedman
  • Vincenzo Dimonte (University of Udine, Italy; February); host: Sy-David Friedman
  • Leandro Aurichi (University of São Paulo; January); host: Lyubomyr Zdomskyy
  • Corey Switzer (City University of New York, Graduate Center, New York City, USA; January); host: Vera Fischer
  • Jaroslav Šupina (Pavol Jozef Šafárik University in Košice, Slovakia, January); host: Vera Fischer
  • Clifton Ealy (Western Illinois University, Macomb, USA; March); host: Benjamin Miller

2019

  • Taras Banakh (Ivan Franko National University of Lviv, Ukraine; December); host: Lyubomyr Zdomskyy
  • Oleksandr Ravsky (National Academy of Sciences of Ukraine; December); host: Lyubomyr Zdomskyy
  • Mohammad Golshani (Institute for Research in Fundamental Sciences (IPM), Tehran, Iran; December); host: Sy-David Friedman
  • Miguel Moreno (Bar-Ilan University, Ramat Gan, Tel Aviv, Israel; December 2019–November 2020); host: Lyubomyr Zdomskyy
  • István Juhász (Rényi Mathematical Institute, Budapest, Hungary; November); host: Sy-David Friedman
  • Radek Honzík (Charles University, Prague, Czech Republic; November); host: Sy-David Friedman
  • Šárka Stejskalová (Charles University, Prague, Czech Republic; November); host: Sy-David Friedman
  • Noé de Rancourt (Charles University, Prague, Czech Republic; November); host: Vera Fischer
  • Yurii Khomskii (Amsterdam University College, Netherlands and Hamburg University, Germany; October); host: Vera Fischer
  • Michał Tomasz Godziszewski (Munich Center for Mathematical Philosophy, Universität München, Germany; October); host: Vera Fischer
  • Christina Brech (Universidade de São Paulo, Brazil; October); host: Lyubomyr Zdomskyy
  • Masahiko Sato (Kyoto University, Japan; October); host: Sy-David Friedman
  • Alexander Osipov (Ural State University of Economics, Yekaterinburg, Russia; September/October); host: Lyubomyr Zdomskyy
  • Asger Törnquist (University of Copenhagen, Denmark; September); host: Vera Fischer
  • Dušan Repovš (University of Ljubjana, Slovenia; July/August); host: Lyubomyr Zdomskyy
  • Clifton Ealy (Western Illinois University, Macomb, USA; July 2019–January 2020); host: Benjamin Miller
  • Jana Maříková (Western Illinois University, Macomb, USA; July 2019–June 2020); host: Benjamin Miller
  • Assaf Shani (University of California, Los Angeles, USA; June/July); host: Yair Hayut
  • Leandro Aurichi (University of São Paulo; June); host: Lyubomyr Zdomskyy
  • Boaz Tsaban (Bar-Ilan University, Tel Aviv, Israel; June/July); host: Lyubomyr Zdomskyy
  • Neil Barton (Zukunftskolleg at the University of Konstanz, Germany; June); host: Sy-David Friedman
  • Johan Comparat (Max Planck Institute for extraterrestrial Physics (MPE/MPG), Bavaria, Germany; May); host: Raphaël Carroy
  • Asaf Karagila (University of East Anglia, Norwich, UK; May); host: Yair Hayut
  • Radek Honzík (Charles University, Prague, Czech Republic; May); host: Sy-David Friedman
  • Šárka Stejskalová (Charles University, Prague, Czech Republic; May); host: Sy-David Friedman
  • Miroslav Zelený (Charles University, Prague, Czech Republic; May); host: Zoltán Vidnyánszky
  • Philipp Lücke (Universität Bonn, Germany; May); hosts: Vera Fischer and Sandra Müller
  • Ilijas Farah (York University, Toronto, Canada; April); host: Vera Fischer
  • Miha Habič (Czech Technical University in Prague, Czech Republic and Charles University, Prague, Czech Republic; March); host: Diana Carolina Montoya
  • Asger Törnquist (University of Copenhagen, Denmark; March); hosts: Vera Fischer and David Schrittesser
  • Christopher Lambie-Hanson (Virginia Commonwealth University, Richmond, USA; March); host: Daniel Soukup
  • Lucas Chiozini Souza (University of São Paulo, Brazil; February); host: Lyubomyr Zdomskyy
  • Benjamin Vejnar (Charles University in Prague, Czech Republic; January); host: Benjamin Miller
  • Radek Honzík (Charles University, Prague, Czech Republic; January); host: Sy-David Friedman
  • Šárka Stejskalová (Charles University, Prague, Czech Republic; January); host: Sy-David Friedman
  • Moritz Müller (Universitat Politècnica de Catalunya, Spain; January); host: Vera Fischer
  • Natasha Dobrinen (University of Denver, Denver, USA; January); host: Vera Fischer

2018

  • Stevo Todorcevic (Univerity of Toronto, Canada and CNRS Paris, France; December); host: Vera Fischer
  • Jerzy Kąkol (Adam Mickiewicz University, Poznań, Poland; December); host: Damian Sobota
  • Russell Miller (Queens College, City University of New York, USA; November); host: Sy-David Friedman
  • Tim Button (University of Cambridge, UK; November); host: Neil Barton
  • David Asperó (University of East Anglia, Norwich, UK; October); host: Vera Fischer
  • David Chodounský (Academy of Sciences of the Czech Republic, Prague; October); host: Vera Fischer
  • Gerhard Jäger (Universität Bern, Switzerland; October); host: Sy-David Friedman
  • Andrew Brooke-Taylor (University of Leeds, West Yorkshire, UK; September)
  • Asger Törnquist (University of Copenhagen, Denmark; September)
  • Diego Alejandro Mejía (Shizuoka University, Japan; September)
  • David Chodounský (Academy of Sciences of the Czech Republic, Prague; August)
  • Christopher Menzel (Texas A&M University, USA; June)
  • Borisha Kuzeljevic (Czech Academy of Sciences, Prague; May)
  • David Chodounský (Academy of Sciences of the Czech Republic, Prague; May)
  • Yair Hayut (Hebrew University of Jerusalem, Israel; May)
  • Jérémie Joudioux (Radboud University Nijmegen, Netherlands; May)
  • Radek Honzík (Charles University, Prague, Czech Republic; April)
  • Vincenzo Dimonte (University of Udine, Italy; May)
  • Filippo Calderoni (Università di Torino, Italy and Politecnico di Torino, Italy; April)
  • Victoria Gitman (Graduate Center, City University of New York, USA; April)
  • Alexander Paseau (Wadham College, Oxford, UK; March)
  • Jan Grebík (Czech Academy of Sciences, Prague; March–May)
  • Radek Honzík (Charles University, Prague, Czech Republic; February/March)
  • Miha Habič (Charles University in Prague, Czech Republic; February)
  • Jonathan Verner (Charles University in Prague, Czech Republic; February)
  • Jörg Brendle (Kobe University, Japan; February)
  • Philipp Schlicht (Universität Bonn, Germany; January)

2017

  • Viktoria Frider-Brydun (Ivan Franko Lviv National University, Ukraine; December)
  • Hubie Chen (Birkbeck, University of London, UK; December)
  • Daniel Waxman (Corpus Christi College, Oxford, UK; November/December)
  • Russell Miller (Queens College, City University of New York (CUNY), USA; November)
  • Paul Ellis (Manhattanville College, New York, USA; November)
  • Šárka Stejskalová (Charles University, Prague, Czech Republic; November)
  • Radek Honzík (Charles University, Prague, Czech Republic; November))
  • Asger Törnquist (University of Copenhagen, Denmark; October)
  • Yizheng Zhu (Universität Münster, Germany; October)
  • Wolfgang Wohofsky (Universität Hamburg, Germany; October)
  • Šárka Stejskalová (Charles University, Prague, Czech Republic; September)
  • Radek Honzík (Charles University, Prague, Czech Republic; September)
  • Kameryn Williams (Graduate Center, City University of New York (CUNY), USA; September)
  • Mohammad Golshani (Institute for Research in Fundamental Sciences (IPM), Tehran, Iran; September)
  • Claudio Ternullo (Rome, Italy; September)
  • Frank Tall (University of Toronto, Canada; September)
  • Yijia Chen (Fudan University, Shanghai, People's Republic of China; August)
  • Jan Grebík (Academy of Sciences of the Czech Republic, Prague; August)
  • Wolfgang Wohofsky (Universität Hamburg, Germany; July/August)
  • Alexander S. Kechris (California Institute of Technology, USA; July)
  • Peter Nyikos (University of South Carolina, Columbia, USA; June)
  • Šárka Stejskalová (Charles University, Prague, Czech Republic; June)
  • Radek Honzík (Charles University, Prague, Czech Republic; June)
  • Witold Marciszewski (University of Warsaw, Poland; June)
  • David Schrittesser (University of Copenhagen, Denmark; June)
  • Zoltán Vidnyánszky (York University, Toronto, Canada; June)
  • Chris Scambler (New York University, USA; May/June)
  • Vincenzo Dimonte (University of Udine, Italy; May/June)
  • Wolfgang Wohofsky (Universität Hamburg, Germany; May/June)
  • Pratulananda Das (Jadavpur University, Kolkata, West Bengal, India; May)
  • Victoria Gitman (Graduate Center, City University of New York, USA; May)
  • Šárka Stejskalová (Charles University, Prague, Czech Republic; May)
  • Radek Honzík (Charles University, Prague, Czech Republic; May)
  • Sam Roberts (University of Bristol, UK; April)
  • Matteo Viale (Università di Torino, Italy; April)
  • Alberto Marcone (Università di Udine, Italy; April)
  • Gianluca Basso (Université de Lausanne, Switzerland and Università di Torino, Italy; April)
  • Peter Holy (University of Bonn, Germany; April)
  • Luca Incurvati (University of Amsterdam, Netherlands; March)
  • Luca Motto Ros (University of Turin, Italy; March)
  • Michał Godziszewski (University of Warsaw, Poland; March)
  • Vassilios Gregoriades (University of Turin, Italy; March)
  • Jerzy Kąkol (Adam Mickiewicz University Poznań, Poland; März)
  • Yizheng Zhu (Westfälische Wilhelms-Universität Münster, Germany; March)
  • Brent Cody (Virginia Commonwealth University, Richmond, USA; March)
  • Šárka Stejskalová (Charles University, Prague, Czech Republic; February)
  • Radek Honzík (Charles University, Prague, Czech Republic; February)
  • Wolfgang Wohofsky (Universität Hamburg, Germany; February and March)
  • Šárka Stejskalová (Charles University, Prague, Czech Republic; January)
  • Radek Honzík (Charles University, Prague, Czech Republic; January)
  • Asger Törnquist (University of Copenhagen, Denmark; January)
  • Michal Garlík (Czech Academy of Sciences; January)
  • Igor Carboni Oliveira (Charles University in Prague, Czech Republic; January)
  • Leandro Aurichi (University of São Paulo, Brazil; January)
  • Riccardo Camerlo (Politecnico di Torino, Italy; January)

2016

  • Santi Spadaro (University of São Paulo, Brazil; December)
  • David Schrittesser (University of Copenhagen, Denmark; December)
  • Osvaldo Guzmán (Unidad Morelia Universidad Nacional Autónoma de México; December)
  • David Chodounský (Academy of Sciences of the Czech Republic, Prague; December)
  • Michal Doucha (Academy of Sciences of the Czech Republic; December)
  • Anush Tserunyan (University of Illinois at Urbana-Champaign, USA; December)
  • Zeynep Soysal (Harvard University, Cambridge, Massachusetts, USA; November)
  • Šárka Stejskalová (Charles University, Prague, Czech Republic; November)
  • Radek Honzík (Charles University, Prague, Czech Republic; November)
  • Boaz Tsaban (Bar-Ilan University, Tel Aviv, Israel; October)
  • Yurii Khomskii (University of Hamburg, Germany; October)
  • Bartosz Wcisło (University of Warsaw, Poland; October–January 2017)
  • Jan Grebík (Academy of Sciences of the Czech Republic, Prague; October)
  • Piotr Szewczak (Bar-Ilan University, Tel Aviv, Israel; October)
  • Sandra Uhlenbrock (Universität Münster, Nordrhein-Westfalen, Germany; September)
  • Sandra Uhlenbrock (Universität Münster, Nordrhein-Westfalen, Germany; August)
  • Arnold Miller (University of Wisconsin-Madison, USA; July)
  • David Schrittesser (University of Copenhagen, Denmark; July–August)
  • Radek Honzík (Charles University, Prague, Czech Republic; June)
  • Šárka Stejskalová (Charles University, Prague, Czech Republic; June)
  • Peter Nyikos (University of South Carolina, Columbia, USA; June)
  • Sandra Uhlenbrock (Universität Münster, Nordrhein-Westfalen, Germany; June)
  • David Chodounský (Academy of Sciences of the Czech Republic, Prague; May–June)
  • Otmar Spinas (Christian-Albrechts-Universität zu Kiel Kiel, Germany; May)
  • Radek Honzík (Charles University, Prague, Czech Republic; May)
  • Šárka Stejskalová (Charles University, Prague, Czech Republic; May)
  • Sandra Uhlenbrock (Universität Münster, Nordrhein-Westfalen, Germany; May)
  • Paul Gartside (University of Pittsburgh, Pennsylvania, USA; May)
  • Anush Tserunyan (University of Illinois at Urbana-Champaign, USA; May)
  • Jan van Mill (University of Amsterdam, The Netherlands; April)
  • Raphaël Carroy (University of Turin, Italy; April)
  • Jerzy Kąkol (Adam Mickiewicz University Poznań, Poland; April)
  • Jan Grebík (Academy of Sciences of the Czech Republic, Prague; April)
  • Yue Yang (National University of Singapore, Singapore; April)
  • Radek Honzík (Charles University, Prague, Czech Republic; April)
  • Šárka Stejskalová (Charles University, Prague, Czech Republic; April)
  • Sandra Uhlenbrock (Universität Münster, Nordrhein-Westfalen, Germany; April)
  • Radek Honzík (Charles University, Prague, Czech Republic; March)
  • Šárka Stejskalová (Charles University, Prague, Czech Republic; March)
  • Wolfgang Wohofsky (Universität Hamburg, Germany; February)
  • Sandra Uhlenbrock (Universität Münster, Nordrhein-Westfalen, Germany; February)
  • Keita Yokoyama (Japan Advanced Institute of Science and Technology, Nomi, Ishikawa; February)
  • Ari Brodsky (Bar-Ilan University, Tel Aviv, Israel; January)
  • Franqui Cárdenas (Universidad Nacional de Colombia, Bogotá; January)
  • Leszek Kołodziejczyk (University of Warsaw, Poland; January)
  • David Schrittesser (University of Copenhagen, Denmark; January)

2015

  • David Chodounský (Academy of Sciences of the Czech Republic, Prague; December)
  • Jonathan Verner (Charles University in Prague, Czech Republic; December)
  • Damian Sobota (Polish Academy of Sciences, Warsaw; December)
  • Daniel Soukup (Alfréd Rényi Institute of Mathematics, Hungary, December)
  • Sheila Miller (New York City College of Technology, CUNY, USA; December)
  • Sandra Uhlenbrock (Universität Münster, Nordrhein-Westfalen, Germany; December)
  • Asger Törnquist (University of Copenhagen, Denmark; November)
  • Victor Selivanov (A.P. Ershov Institute of Informatics Systems, Novosibirsk, Russia and Siberian Branch of the Russian Academy of Sciences; November)
  • Oleg Kudinov (Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia; November)
  • David Chodounský (Academy of Sciences of the Czech Republic, Prague; November)
  • Hubie Chen (University of the Basque Country, Spain; October)
  • Yurii Khomskii (Universität Hamburg, Germany; October)
  • David Schrittesser (University of Copenhagen, Denmark; October)
  • Tetsuo Ida (University of Tsukuba, Japan; October)
  • Giorgio Venturi (State University of Campinas, Brazil; September)
  • Mohammad Golshani (Institute for Research in Fundamental Sciences (IPM), Iran; September)
  • Sandra Uhlenbrock (Universität Münster, Nordrhein-Westfalen, Germany; August)
  • Jindřich Zapletal (Czech Academy of Sciences, Czech Republic and University of Florida, USA; July)
  • Jan Grebík (Academy of Sciences of the Czech Republic, Prague; July)
  • David Chodounský (Academy of Sciences of the Czech Republic, Prague; July)
  • Dana S. Scott (Carnegie Mellon University, Pittsburgh, Pennsylvania, USA and UC Berkeley, California, USA; July)
  • Sandra Uhlenbrock (Universität Münster, Nordrhein-Westfalen, Germany; July)
  • Jonathan Verner (Charles University in Prague, Czech Republic; June–July)
  • Peter Schuster (University of Verona, Italy, currently Humboldt returning fellow at the Munich Center for Mathematical Philosophy, Germany; June)
  • Johanna Franklin (Hofstra University, Hempstead, New York, USA; June)
  • David Schrittesser (University of Copenhagen, Denmark; June–August)
  • Iskander Kalimullin (Kazan State University, Russia and Kazan (Volga Region) Federal University, Russia; June)
  • Andrey Frolov (Kazan (Volga region) Federal University, Russia; June)
  • Clinton Conley (Cornell University, New York, USA; June)
  • Valentina Harizanov (The George Washington University, Washington, D.C., USA; May–June)
  • Liang Yu (Nanjing University, Nanjing, PR of China; May)
  • Peter Holy (Universität Bonn, Germany; May)
  • Sandra Uhlenbrock (Universität Münster, Nordrhein-Westfalen, Germany; May)
  • Noam Greenberg (Victoria University of Wellington, New Zealand; May)
  • Piotr Borodulin-Nadzieja (Wrocław University, Poland; May)
  • Ali Enayat (University of Gothenburg, Sweden; May)
  • Jonathan Verner (Charles University, Prague, Czech Republic; April)
  • Jerzy Kąkol (Adam Mickiewicz University, Poznań, Poland; April)
  • Sandra Uhlenbrock (Universität Münster, Nordrhein-Westfalen, Germany; February)
  • Ilya Sharankou (Universität Hamburg, Germany; February–March)
  • Natasha Dobrinen (University of Denver, Colorado, USA; February)
  • Asger Törnquist (University of Copenhagen, Denmark; February)
  • Daisuke Ikegami (Kobe University, Japan; February)
  • Toshimichi Usuba (Kobe University, Japan; February)
  • Sakaé Fuchino (Kobe University, Japan; February)
  • Jörg Brendle (Kobe University, Japan; February)
  • Neil Thapen (Academy of Sciences of the Czech Republic; January)
  • Franqui Solis Cárdenas Poloche (Universidad Nacional de Colombia; January)
  • Daniel Soukup (University of Toronto, Canada; January)
  • David Chodounský (Institute of Mathematics of the Czech Academy of Sciences; January)

2014

  • Franqui Solis Cárdenas Poloche (Universidad Nacional de Colombia; December)
  • Neil Barton (University of London, UK; December)
  • Leandro Aurichi (Universidade de São Paulo, Brazil; December)
  • Sergey Goncharov (Novosibirsk State University, Russia, and Russian Academy of Sciences; December)
  • Serikzhan Badaev (Al-Farabi Kazakh National University, Kazakhstan, December)
  • David Chodounský (Institute of Mathematics of the Czech Academy of Sciences; November and December)
  • Jan Starý (Czech Technical Univeristy in Prague; November)
  • Seçil Tokgöz (Hacettepe University, Ankara, Turkey; November–January 2015)
  • Jonathan Verner (Charles University, Prague, Czech Republic; November)
  • Wiesław Kubiś (Academy of Sciences of the Czech Republic; November)
  • Andrew Brooke-Taylor (University of Bristol, UK; October)
  • Jerzy Kąkol (Adam Mickiewicz University, Poznań, Poland; October)
  • Vladimir V. Tkachuk (Universidad Autónoma Metropolitana de México, Mexico City, Mexico; October)
  • Victor Selivanov (A.P. Ershov Institute of Informatics Systems, Novosibirsk, Russia and Siberian Branch of the Russian Academy of Sciences; September)
  • Asger Törnquist (University of Copenhagen, Denmark; September)
  • Jan van Mill (Universiteit van Amsterdam, Netherlands; August)
  • Xianghui Shi (Beijing Normal University, People's Republic of China; August)
  • Natasha Dobrinen (University of Denver, Colorado, USA; July–August)
  • Bakhadyr Khoussainov (University of Auckland, New Zealand; July)
  • Michael Chris Laskowski (University of Maryland, USA; July)
  • John T. Baldwin (UIC Chicago, USA; July)
  • Asger Törnquist (University of Copenhagen, Denmark; June)
  • Miloš Kurilić (University of Novi Sad, Serbia; June)
  • Michael Potter (Fitzwilliam College, University of Cambridge, UK; March)
  • Hubie Chen (Universidad del País Vasco, San Sebastian, Spain; March)
  • Valentina Harizanov (George Washington University, Washington, D.C., USA; March)
  • Victor Selivanov (A.P. Ershov Institute of Informatics Systems, Novosibirsk, Russia and Siberian Branch of the Russian Academy of Sciences; January)
  • Natasha Dobrinen (University of Denver, Colorado, USA; January)
  • Peter Schuster (Pure Mathematics, University of Leeds, UK; January)

2013

  • Alexey Stukachev (Siberian Branch of the Russian Academy of Sciences Novosibirsk, Russian Federation and Novosibirsk State University; December)
  • Michael Hrušák (Universidad Nacional Autónoma de México; December)
  • Oleg Gutik (Ivan Franko National University of Lviv, Ukraine; December)
  • Asylkhan Khisamiev (Sobolev Institute of Mathematics, Siberian Branch of the Russian Academy of Sciences; November)
  • Giorgio Venturi (Scuola Normale Superiore di Pisa, Italy; November)
  • Masahiko Sato (Kyoto University, Japan; October)
  • Victor Selivanov (A.P. Ershov Institute of Informatics Systems, Novosibirsk, Russia and Siberian Branch of the Russian Academy of Sciences; October)
  • Stéphane Le Roux (Universität Darmstadt, Germany; October)
  • John Clemens (Universität Münster, Germany; September 30–October 4)
  • Yijia Chen (Shanghai Jiao Tong University, People's Republic of China; August)
  • Thomas Johnstone (New York City College of Technology, USA; June)
  • Santi Spadaro (Silesian University in Opava, Czech Republic; June)
  • Johanna Franklin (University of Connecticut, USA; June)
  • Yann Strozecki (Versailles University, France; June)
  • Philipp Schlicht (University of Bonn, Germany; May)
  • Hubie Chen (Universidad del País Vasco, Spain and Basque Foundation for Science, Spain; April)
  • John T. Baldwin (University of Illinois at Chicago, USA; February)
  • Tapani Hyttinen (University of Helsinki, Finland; February)
  • Chris Laskowski (University of Maryland, USA; February)
  • James Cummings (Carnegie Mellon University, Pittsburgh, Pennsylvania, USA; January)
  • Mohammad Golshani (IPM, Tehran, Iran; January)
  • Massoud Pourmahdian (IPM, Tehran, Iran; January)
  • Peter Holy (University of Bristol, UK; January)
  • Aleksander Ivanov and Barbara Majcher-Iwanow (University of Wrocław, Poland; January)

2012

  • Sam Sanders (Ghent University, Belgium and MCMP München, Germany; December)
  • Asger Törnquist (University of Copenhagen, Denmark; December)
  • Leandro Aurichi (ICMC-USP, University of São Paulo, Brazil; December)
  • Veronika Douchova (Charles University in Prague, Czech Republic; November)
  • Shuguo Zhang (Sichuan University, People's Republic of China; November)
  • Asger Törnquist (University of Copenhagen, Denmark; October)
  • Dor Marciano (Ben-Gurion University, Israel; September)
  • Arnold Beckmann (Swansea University, UK; September)
  • Neil Thapen (Academy of Sciences of the Czech Republic; September)
  • Samuel R. Buss (University of California, San Diego, USA; September)
  • Asaf Karagila (Ben-Gurion University, Israel; September)
  • Boaz Tsaban (Bar-Ilan University, Israel; September)
  • Christopher Daw (University College London, UK; August)
  • Jindrich Zapletal (University of Florida, USA and Czech Academy of Sciences; August)
  • Veronika Douchova (Charles University in Prague, Czech Republic; July)
  • Julia Knight (University of Notre Dame, Indiana, USA; July)
  • Russell Miller (Queens College, City University of New York, USA; July)
  • Antonio Montalbán (University of Chicago, USA; July)
  • Frank Tall (University of Toronto, Canada; July)
  • Andrey Morozov (Novosibirsk State University, Russia; June)
  • Sakae Fuchino (Kobe Univesity, Japan; June)
  • Martin Bays (McMaster University, Ontario, Canada; June)
  • Moshe Kamenski (University of Notre Dame, USA; June)
  • Peter Holy (University of Bristol, UK; June)
  • Alessandro Andretta (Torino, Italy; June)
  • Jindrich Zapletal (University of Florida, USA and Czech Academy of Sciences; May)
  • André Nies (University of Auckland, New Zealand; May)
  • Ostap Chervak (Ivan Franko National University of Lviv, Ukraine; May)
  • Alexander Osipov (Ural Branch of the Russian Academy of Sciences, Ekaterinburg, Russia; May)
  • Hubie Chen (Universitat Pompeu Fabra, Barcelona, Spain; May)
  • Diego Mejía (Universidad Nacional de Colombia; April-May)
  • Peter Holy (University of Bristol, UK; April)
  • Adam Harris (University of Oxford, UK; April)
  • Martin Bays (McMaster University, Ontario, Canada; April)
  • André Nies (University of Auckland, New Zealand; January)
  • Howard Becker (University of South Carolina, USA; January)
  • Asger Törnquist (University of Copenhagen, Denmark; January)

2011

  • David Chodounský (Charles University in Prague, Czech Republic; December)
  • Valentina Harizanov (George Washington University, Washington, D.C., USA; November)
  • Joel Hamkins (City University of New York, USA; October and November)
  • Itay Kaplan (University of Münster, Germany; September)
  • Jörg Brendle (Kobe University, Japan; September)
  • Boaz Tsaban (Bar-Ilan University, Israel; August)
  • Chi Tat Chong (National University of Singapore; July)
  • Taras Banakh (Lviv State University, Ukraine; June)
  • Mariya Soskova (Sofia University, Bulgaria; May)
  • Benjamin Miller (University of Münster, Germany; May)
  • William Weiss (University of Toronto, Canada; April)
  • Yi Zhang (Sun Yat-sen University, Guangzhou, People's Republic of China; April)
  • Marco Porta (Casale monferato, Italy; April)
  • Martin Bays (University of Paris 7, France; April)
  • Juris Steprans (York University, Canada; April)
  • Shashi Srivastava (Indian Statistical Institute, Kolkata, India; April)
  • Haimanti Srivastava (Indian Statistical Institute, Kolkata, India; April)
  • Yike Guo (Imperial College London, UK; March)
  • Tetsuo Ida (University of Tsukubai, Japan; March)
  • Masahiko Sato (Kyoto University, Japan; March)
  • Fairouz Kamareddine (Heriot-Watt University, Edinburgh, UK; March)
  • Achim Blumensath (TU Darmstadt, Germany; January)
  • Menachem Magidor (The Hebrew University of Jerusalem, Israel; January)
  • Jonathan Verner (Charles University in Prague, Czech Republic; January)

2010

  • Li Yanfang (Tianjin University, People's Republic of China; December)
  • Stefan Geschke (Hausdorff Center for Mathematics, Universität Bonn, Germany; December)
  • Jindrich Zapletal (University of Florida, Gainesville, USA and Czech Academy of Sciences, Prague, Czech Republic; Decmeber)
  • Jonathan Verner (Charles University in Prague, Czech Republic; November and December)
  • Iskander Kalimullin (Kazan Federal University, Russia; October)
  • Andrey Frolov (Kazan Federal University, Russia; October)
  • Luca Motto Ros (University of Freiburg, Germany; October)
  • Hiroshi Sakai (Kobe University, Japan; September)
  • Philip Welch (University of Bristol, UK; September)
  • Pablo Cubides Kovacsics (University Paris 7, France; September)
  • Alessandro Berarducci (University of Pisa, Italy; June)
  • Enrique Casanovas (University of Barcelona, Spain; June)
  • James Cummings (Carnegie Mellon University, USA; June)
  • David Evans (University of East Anglia, UK; June)
  • Moti Gitik (Tel Aviv University, Israel; June)
  • Martin Koerwien (University of Barcelona, Spain; June)
  • Anand Pillay (University of Leeds, UK; June)
  • Radek Honzík (Charles University, Czech Republic; June and October)
  • Denis Saveliev (Moscow State University, Russia; June)
  • Andrew Brooke-Taylor (Bristol University, UK; May)
  • Benjamin Miller (University of Münster, Germany; April and May)
  • Roman Sasyk (CONICET, Argentinia; April and May)
  • Greg Hjorth (University of Melbourne, Australia; February)

2009

  • Pavel Semukhin (October)
  • Victor Selivanov (October)
  • Kentaro Sato (July)
  • Joel D. Hamkins (June)
  • Matthew Foreman (June)
  • Alberto Marcone (May)
  • Bernhard Irrgang (May)
  • Riccardo Camerlo (May)
  • Sergey Goncharov (March)
  • Hans Adler (January)
  • Jindrich Zapletal (January)

2008

  • Mirna Dzamonja (December)
  • Grzegorz Plebanek (December)
  • Antonin Kucera (November)
  • Alessandro Andretta (June)
  • James Cummings (June)
  • Tapani Hyttinen (May)
  • Martin Koerwien (May)
  • Ernest Schimmerling (May)
  • Menachem Magidor (April)
  • Bernhard Irrgang (March)
  • Jörg Brendle (January)

2007

  • Philip Welch (December)
  • Vladimir Kanovei (November)
  • Moti Gitik (October)
  • Yi Zhang (October)
  • James Cummings (July)
  • Tapani Hyttinen (June)
  • Thomas Johnstone (May-June)

previous years (list incomplete)

  • Richard Kaye (November 2006)
  • James Cummings (June, July 2006)
  • Mirna Dzamonja (October 2005)
  • Boban Velickovic (October-December 2004)