皆様，
東北大学の横山です． 直前のご案内で恐縮ですが，以下の通りセミナーを開催いたします． (通常と異なり火曜日となっております．)
https://sites.google.com/view/sendai-logic/
日時：5月9日(火)15:00〜 場所：東北大学理学研究科合同A棟801号室 (zoom配信あり) 講演者：Antonio Montalban (University of California, Berkeley) Title: The game metatheorem. Abstract: We present a new metatheorem based on Ash and Kight’s original eta-system priority argument. The previous modification of Ash and Knight’s metatheorem by the author was more hands-on and slightly more general than the original. This new version is more abstract, less hands-on, less general, but much easier to apply. We will also mention a new topological version that is currently work in progress with Andrew Marks.
どうぞよろしくお願いいたします．
横山啓太 -- Keita Yokoyama Mathematical Institute, Tohoku University Aoba, Sendai, JAPAN, 980-8578 keita.yokoyama.c2@tohoku.ac.jp