Kisoron-ml February 2014

3 participants
5 discussions

春の数学会
by KASHIMA Ryo 13 Jun '14

13 Jun '14

日本数学会数学基礎論および歴史分科会会員の皆様、連絡責任評議員の鹿島です。春の学会（2014年3月15日(土)から3月18日(火)学習院大学）の一般講演申し込みが始まりました（オンライン講演申込締め切りは12月1日）。多くの発表をしていただけると嬉しいです。開催情報は以下をご覧下さい： http://mathsoc.jp/meeting/gakushuin14mar/ ＝＝＝＝＝＝＝＝＝＝【発表をされる方へのお願い】今回から新たに、　アブストラクトの最終的な印刷用PDFファイルの確認を　講演申し込み者本人が行うということになりました。具体的には12月24日（火）から12月27日（金）の短い期間に申込者本人が確認作業をする必要があるようです。詳細は次をご覧下さい： http://mathsoc.jp/meeting/gakushuin14mar/outline.html ----- 鹿島亮東京工業大学大学院情報理工学研究科数理・計算科学専攻 kashima(a)is.titech.ac.jp

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JAIST Logic Seminar Series
by Hajime Ishihara 27 Feb '14

27 Feb '14

皆様ミュンヘン大学のHelmut Schwichtenberg先生の連続講演のお知らせです。ふるってご参加ください。問合せ先：石原　哉北陸先端科学技術大学院大学情報科学研究科 e-mail: ishihara(a)jaist.ac.jp -------------------------------------------------- * JAIST Logic Seminar Series * * This seminar is held as a part of the EU FP7 Marie Curie Actions IRSES project CORCON. Date: Wednesday 5, Thursday 6, Friday 7 March, 2014, 15:10-16:40 Place: JAIST, Lecture room I1 (Access: http://www.jaist.ac.jp/english/location/access.html) Speaker: Professor Helmut Schwichtenberg (Ludwig-Maximilians-Universitaet Muenchen, Germany) Title: Computational content of proofs *Wednesday 5 March, 2014, 15:10-16:40* Lecture 1. Computing with partial continuous functionals. We define computable functionals of finite type, with the Scott-Ersov partial continuous functionals as domains. A term language T+ (a common extension of Goedel's T and Plotkin's PCF) is introduced to denote computable functionals. *Thursday 6 March, 2014, 15:10-16:40* Lecture 2. A theory of computable functionals. Based on T+ we define a logical language whose quantifiers range over partial continuous functionals and whose predicates are inductively defined. We obtain a theory TCF of computable functionals by adding introduction and elimination axioms for inductive predicates to minimal logic. TCF admits a realizability interpretation (by terms in T+) and a soundness theorem can be proved. *Friday 7 March, 2014, 15:10-16:40* Lecture 3. Extracting programs from proofs. Every constructive proof of an existential theorem (or problem; Kolmogorov 1932) contains a construction of a solution. To get hold of such a solution we have two methods. (a) Write-and-verify. Guided by the constructive proof directly write a program to compute the solution, and then prove (verify) that this is the case. (b) Prove-and-extract. Formalize the proof and extract its computational content in the form of a realizing term t. Since the latter approach requires formalization of the proof it is less popular. But it has advantages. (i) Dealing with a problem on the proof level allows abstract mathematical tools and a good organization of the material. Both help to adapt the proof to changed specifications. (ii) The extracted term can be automatically verified, by means of a formalization of the soundness theorem. As an example of the prove-and-extract method we build a parser for the Dyck language of balanced parentheses. -- Professor Hajime Ishihara School of Information Science Japan Advanced Institute of Science and Technology 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan Tel: +81-761-51-1206 Fax: +81-761-51-1149 ishihara(a)jaist.ac.jp http://www.jaist.ac.jp/~ishihara

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Reminder: Kanazawa Workshop for Epistemic Logic and its Dynamic Extensions (21st and 22nd of Feb. 2014)
by Katsuhiko Sano 13 Feb '14

13 Feb '14

皆様、重複して受け取られた場合はどうぞご容赦ください。北陸先端科学技術大学院大学の佐野勝彦です。 Computability Theory and Foundations ofMathematics 2014 の直後の 2/21, 2/22 に金沢で開催する Epistemic Logic に関する国際ワークショップについて、開催が迫りましたので、再度ご案内を致します。 =========================================== Kanazawa Workshop for Epistemic Logic and its Dynamic Extensions -- JAIST Logic Workshop Series 2014 -- Dates: February 21-22, 2014 Venue: Shiinoki Cultural Complex, Kanazawa, Ishikawa, Japan Website: http://www.jaist.ac.jp/~v-sano/jw2014/index.html =========================================== Kanazawa Workshop for Epistemic Logic and its Dynamic Extensions will be held at the Shiinoki Cultural Complex, and is organized by Satoshi Tojo and Katsuhiko Sano of Japan Advanced Institute of Science and Technology from 21st to 22nd February, 2014. The aim of the workshop is to discuss about epistemic logic and dynamic epistemic logic and their application from theoretical and practical viewpoints. Invited Speakers: Thomas Ågotnes (University of Bergen) Mamoru Kaneko (Waseda University) Hidenori Kurokawa (Kobe Univeristy) Minghui Ma (Southwest University) François Schwarzentruber (ENS Rennes) Jeremy Seligman (The University of Auckland) Sonja Smets (ILLC, Universiteit van Amsterdam) Nobu-Yuki Suzuki (Shizuoka University) Fernando R. Velázquez Quesada (Universidad de Sevilla) Tomoyuki Yamada (Hokkaido University) -- Katsuhiko Sano School of Information Science Japan Advanced Institute for Science and Technology IS building No.1 7F, 1-1 Asahidai, Nomi, Ishikawa, 923-1292, Japan

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JAIST Logic Seminar Series (20th Feb. 2014)
by Katsuhiko Sano 12 Feb '14

12 Feb '14

皆様、千葉大学の新井敏康先生の講演のお知らせです。どうぞふるってご参加ください。問合せ先：佐野勝彦北陸先端科学技術大学院大学情報科学研究科 e-mail: v-sano(a)jaist.ac.jp -------------------------------------------------- * JAIST Logic Seminar Series * Date: Thursday 20th February 2014, 15:00-16:30 Place: Collaboration room 7 (I-56) (Access: http://www.jaist.ac.jp/english/location/access.html) Speaker: Prof. Toshiyasu ARAI (Chiba University) Title: Proof search in intuitionistic logics Abstract: Following G. Mints, we present a complete proof search in multi-succedent sequent calculi for intuitionistic propositional and pure predicate logic in the spirit of Schuette's schema.

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Computability Theory and Foundations of Mathematics 2014
by YOKOYAMA Keita 04 Feb '14

04 Feb '14

皆様、参加登録の締め切りが2月7日に迫って参りましたので、再び案内をさせていただきます。 2月17日(月)～2月20日(木)に東京工業大学 Computability Theory and Foundations of Mathematics 2014 を開催致します。研究集会のプログラムが http://www.jaist.ac.jp/CTFM/CTFM2014/timetable.html にてご覧いただけます。宜しく参加をご検討ください。横山 ============================================================ Computability Theory and Foundations of Mathematics (Tokyo Institute of Technology, Tokyo, Japan, February 17 - 20, 2014) Conference webpage http://www.jaist.ac.jp/CTFM/CTFM2014/index.html Registration deadline: February 7. Invited Speakers Chong Chi Tat (National University of Singapore) Damir Dzhafarov (University of Connecticut) Cameron Freer (Massachusetts Institute of Technology and Analog Devices Lyric Labs) Hajime Ishihara (JAIST) Akinori Kawachi (Tokyo Institute of Technology) Akitoshi Kawamura (University of Tokyo) Takayuki Kihara (JAIST) Antonio Montalbán (University of California, Berkeley) Ng Keng Meng (Nanyang Technological University) Jan Reimann (Pennsylvania State University) Paul Shafer (Ghent University) Stephen G. Simpson (Pennsylvania State University) Henry Towsner (University of Pennsylvania) Wang Wei (Sun Yat-sen University) Wu Guohua (Nanyang Technological University) Organising Committee Hajime Ishihara (JAIST) Ryo Kashima (Tokyo Institute of Technology, local chair) Sam Sanders (Ghent) Stephen G. Simpson (Pennsylvania State University) Kazuyuki Tanaka (Tohoku, chair) Keita Yokoyama (JAIST) Programme Committee Kojiro Higuchi (Chiba) Takayuki Kihara(JAIST) Kenshi Miyabe(Tokyo) Takako Nemoto(JAIST) Sam Sanders (Ghent) Takeshi Yamazaki (Tohoku) Keita Yokoyama (JAIST, chair) Keisuke Yoshii (Tohoku) ============================================================ どうぞよろしくお願い致します。横山啓太 -- Keita Yokoyama y-keita(a)jaist.ac.jp

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Kisoron-ml February 2014