Logic-ml April 2013

11 participants
15 discussions

Kobe Colloquium on Logic, Statistics and Informatics, May 10 (Andre Nies)
by Joerg Brendle 26 Apr '13

26 Apr '13

Kobe Colloquium on Logic, Statistics and Informatics 以下の要領でコロキウムを開催します。日時：2013年5月10日（金）10:40-12:10 講演者：Andre Nies (University of Auckland, New Zealand) 場所：神戸大学自然科学総合研究棟3号館4階421室（プレゼンテーション室） ======================================================================== 題目：The complexity of similarity relations among Polish metric spaces アブストラクト：We calibrate the complexity of similarity relations between Polish metric spaces. First we discuss the classical case, based on concepts of Gromov. Thereafter we consider computable Polish metric spaces. For instance, Melnikov and I give the exact complexity of isometry between compact computable spaces, and show that isometric spaces of this kind have a Delta 3 isometry. ======================================================================== 交通：阪急六甲駅またはJR六甲道駅から神戸市バス36系統「鶴甲団地」行きに乗車，「神大本部工学部前」停留所下車，徒歩すぐ． http://www.kobe-u.ac.jp/info/access/rokko/rokkodai-dai2.htm 連絡先：ブレンドレヨーグ brendle(a)kurt.scitec.kobe-u.ac.jp

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浦本武雄さん（京大数学）によるご講演（来週火曜，4/30）
by Ichiro Hasuo 26 Apr '13

26 Apr '13

みなさま，東京大学の蓮尾です．来週は研究室のセミナーに浦本武雄さん（京都大学数学教室D3）をお招きして，形式言語理論と圏論的双対性の関連についての結果をお話いただきます．どうかご自由にご参加ください．どうかよろしくお願いいたします．それでは！蓮尾一郎研究室ウェブページ： https://www-mmm.is.s.u-tokyo.ac.jp/indexj.html ============ Tue 30 April 2013, 15:30-17:30 Takeo Uramoto (Dept. Mathematics, Kyoto University) Tannaka-style reconstruction theorem for profinite monoids with an application to Eilenberg-Reiterman's variety theory 理学部7号館1階 102教室 Room 102, School of Science Bldg. No. 7 アクセス： https://www-mmm.is.s.u-tokyo.ac.jp/indexj.html （一番下） Access: http://www-mmm.is.s.u-tokyo.ac.jp/ (see bottom) Eilenberg-Reiterman's variety theory is one of the central theories in algebraic studies of finite automata and regular languages. In its recent development, Rhodes and Steinberg pointed out that the Boolean algebra of regular languages admits a bialgebra structure and revealed its important role in the duality-theoretic formulation of the variety theory. In this talk, we study the structure of the bialgebra of regular languages using a traditional idea from the linear representation theory of groups. In particular, we aim at clarifying a close connection between algebraic structures on the bialgebra of regular languages and geometric structures of finite automata. Our main result claims that there exists a bijective correspondence between bilinear multiplications of regular languages that are compatible with respect to word decompositions and binary products on finite automata that are stable with respect to simulations. This is proved as a corollary of the Tannaka-style reconstruction theorem for profinite monoids, which is an analogue of the classical Tannaka duality theorem for compact groups and indicates a categorical universality of the Boolean algebra of regular languages with respect to finite automata and simulations.

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ランダムネスの研究集会のご案内と参加募集
by Kenshi Miyabe 26 Apr '13

26 Apr '13

4月から東大に移りました宮部です．お世話になっております．ランダムネスに関する研究集会を次のように開催します．集会名：ELC Workshop on Randomness and Probability Through Computability (RPTC2013) 日時：2013年5月14日(火)15日(水) 場所: 東京大学本郷工学部6号館セミナー室A,D http://kenshi.miyabe.name/rptc2013/ 直前の2013年5月13日(月)14日(火)には，近い場所でランダムネスのセミナーも行う予定です． ELC Seminar on Algorithmic Randomness http://kenshi.miyabe.name/rptc2013/seminar.html 招待講演者: Rod Downey André Nies Bakhadyr Khoussainov Shuji Kijima Prof. Downeyにはランダムネスの導入的な話もお願いしてあります．プログラムおよびアブストラクトを以下で見ることができます． http://kenshi.miyabe.name/rptc2013/programme.html セミナーの方のプログラムも近々詳細をアップロード予定です． http://kenshi.miyabe.name/rptc2013/seminar.html 皆様のご参加お待ちしております。なお，本集会は文部科学省科学研究費補助金新学術領域研究「多面的アプローチの統合による計算限界の解明」 http://www.al.ics.saitama-u.ac.jp/elc/ および FIRST 合原最先端数理モデルプロジェクト http://www.sat.t.u-tokyo.ac.jp/first/ の支援を受けております．東京大学情報理工学系研究科河村彰星 kawamura(a)is.s.u-tokyo.ac.jp 東京大学情報理工学系研究科宮部賢志 kmiyabe(a)kurims.kyoto-u.ac.jp -- Kenshi Miyabe email: research(a)kenshi.miyabe.name JSPS Research Fellow Graduate school of Information Science and Technology, The University of Tokyo Tel: +81-3-5841-6943

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APLAS 2013 call for papers
by Jacques Garrigue 24 Apr '13

24 Apr '13

Logic-MLの皆様、 12月にオーストラリアのメルボルンで開催されるAPLASの論文募集案内をお送りします。投稿締め切りは6月14日ですので、ご検討をよろしくお願いいたします。 Jacques Garrigue =============================================================== APLAS 2013 11th Asian Symposium on Programming Languages and Systems 9-11 December 2013 Melbourne, Australia (colocated with CPP 2013) CALL FOR PAPERS =============================================================== ========== BACKGROUND ========== APLAS aims to stimulate programming language research by providing a forum for the presentation of latest results and the exchange of ideas in programming languages and systems. APLAS is based in Asia, but is an international forum that serves the worldwide programming language community. APLAS is sponsored by the Asian Association for Foundation of Software (AAFS) founded by Asian researchers in cooperation with many researchers from Europe and the USA. Past APLAS symposiums were successfully held in Kyoto ('12), Kenting ('11), Shanghai ('10), Seoul ('09), Bangalore ('08), Singapore ('07), Sydney ('06), Tsukuba ('05), Taipei ('04) and Beijing ('03) after three informal workshops. Proceedings of the past symposiums were published in Springer's LNCS. ====== TOPICS ====== The symposium is devoted to foundational and practical issues in programming languages and systems. Papers are solicited on topics such as * semantics, logics, foundational theory; * design of languages, type systems and foundational calculi; * domain-specific languages; * compilers, interpreters, abstract machines; * program derivation, synthesis and transformation; * program analysis, verification, model-checking; * logic, constraint, probabilistic and quantum programming; * software security; * concurrency and parallelism; * tools and environments for programming and implementation. Topics are not limited to those discussed in previous symposiums. Papers identifying future directions of programming and those addressing the rapid changes of the underlying computing platforms are especially welcome. Demonstration of systems and tools in the scope of APLAS are welcome to the System and Tool presentations category. Authors concerned about the appropriateness of a topic are welcome to consult with program chair prior to submission. ========== SUBMISSION ========== We solicit submissions in two categories: *Regular research papers* describing original scientific research results, including tool development and case studies. Regular research papers should not exceed 16 pages in the Springer LNCS format, including bibliography and figures. They should clearly identify what has been accomplished and why it is significant. Submissions will be judged on the basis of significance, relevance, correctness, originality, and clarity. In case of lack of space, proofs, experimental results, or any information supporting the technical results of the paper could be provided as an appendix or a link to a web page, but reviewers are not obliged to read them. *System and Tool presentations* describing systems or tools that support theory, program construction, reasoning, or program execution in the scope of APLAS. System and Tool presentations are expected to be centered around a demonstration. The paper and the demonstration should identify the novelties of the tools and use motivating examples. System and Tool papers should not exceed 8 pages in the Springer LNCS format, including bibliography and figures. Submissions will be judged based on both the papers and the described systems or tools. It is highly desirable that the tools are available on the web. Papers should be submitted electronically via the submission web page: https://www.easychair.org/conferences/?conf=aplas2013 Acceptable formats are PostScript or PDF. Submitted papers must be unpublished and not submitted for publication elsewhere. Papers must be written in English. The proceedings will be published as a volume in Springer's LNCS series. Accepted papers must be presented at the conference. (While the general chair and the program chair cannot submit papers, other members of the program committee can.) ===== DATES ===== Abstract due: 10 June 2013 (Monday), 23:59 UTC Submission due: 14 June 2013 (Friday), 23:59 UTC Notification: 26 August 2013 (Monday) Final paper due: 19 September 2013 (Thursday) Conference: 9-11 December 2013 (Monday-Wednesday) ========== ORGANIZERS ========== General chair: Peter Schachte (University of Melbourne) Program chair: Chung-chieh Shan (Indiana University) Program committee: Filippo Bonchi (CNRS, ENS-Lyon, France) Yu-Fang Chen (Academia Sinica, Taiwan) Shigeru Chiba (The University of Tokyo, Japan) Jacques Garrigue (Nagoya University, Japan) Robert Glück (University of Copenhagen, Denmark) R. Govindarajan (Indian Institute of Science, India) Kazuhiro Inaba (Google, Inc., Japan) Jie-Hong Roland Jiang (National Taiwan University, Taiwan) Shin-ya Katsumata (Kyoto University, Japan) Gabriele Keller (University of New South Wales, Australia) Ana Milanova (Rensselaer Polytechnic Institute, USA) Keisuke Nakano (The University of Electro-Communications, Japan) Hakjoo Oh (Seoul National University, Korea) Bruno C. d. S. Oliveira (National University of Singapore, Singapore) Kaushik Rajan (Microsoft Research, India) Max Schäfer (Nanyang Technological University, Singapore) Ulrich Schöpp (Ludwig-Maximilians-Universität München, Germany) Paula Severi (University of Leicester, UK) Gang Tan (Lehigh University, USA) Hiroshi Unno (University of Tsukuba, Japan) Meng Wang (Chalmers University of Technology, Sweden) Jingling Xue (University of New South Wales, Australia) Mingsheng Ying (University of Technology, Sydney, Australia) Kenny Q. Zhu (Shanghai Jiao Tong University, China) ======= CONTACT ======= http://aplas2013.soic.indiana.edu/ aplas2013(a)easychair.org

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Kobe Colloquium on Logic, Statistics and Informatics, May 1 (Rod Downey)
by Joerg Brendle 23 Apr '13

23 Apr '13

Kobe Colloquium on Logic, Statistics and Informatics 以下の要領でコロキウムを開催します。日時：2013年5月1日（水）15:00-16:30 場所：神戸大学自然科学総合研究棟3号館4階421室（プレゼンテーション室）講演者：Rod Downey (Victoria University of Wellington, New Zealand) ======================================================================== 題目：Effectively in Abelian Group Theory アブストラクト：The effectiveness of the theory of abelian groups has been long studied beginning with the work of Mal'cev in the 60's. Nevertheless many problems remain. In this lecture I will discuss ongoing work on questions of effectiveness of categoricity and presentability for computable torsion-free abelian groups and for p-groups. For example, for categoricity, general problem is impossible; for example Downey and Montalban showed that the isomorphism problem for torsion-free abelian groups is Sigma_1^1-complete. The principle difficulty lies in the lack of invariants. However, where there are some invariants there we can salvage some effectiveness. The groups we look at are the completely decomposable ones, which have decompositions of the form oplus_{i in omega} G_i with G_i a subgroup of the additive group of the rationals. Such groups are called homogeneous if G_i=H for all i. Alexander Melnikov and the author have shown that homogeneous computable completely decomposable groups are always Delta_3^0 categorical, this bound is sharp, and have classified when the groups are Delta_2^0 categorical in terms of what are called semilow sets. In more recent work, we have shown that every computable completely decomposable group is Delta_5^0 categorical and that this bound is sharp. Additionally we can show that the index set of such groups is Sigma_7^0. I will also describe ongoing work on Ulm's Theorem. ======================================================================== 交通：阪急六甲駅またはJR六甲道駅から神戸市バス36系統「鶴甲団地」行きに乗車，「神大本部工学部前」停留所下車，徒歩すぐ． http://www.kobe-u.ac.jp/info/access/rokko/rokkodai-dai2.htm 連絡先：ブレンドレヨーグ brendle(a)kurt.scitec.kobe-u.ac.jp

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Fwd: GALOP 2013 - Call for Papers
by Ichiro Hasuo 23 Apr '13

23 Apr '13

みなさま，こんにちは！東京大学の蓮尾です． SCメンバーとして，ゲーム意味論についてのワークショップ GaLoP のご案内を転送します．トピック限定＆コミュニティ指向型の，深い議論のできるワークショップです．どうか投稿・参加をご検討ください．どうかよろしくお願いいたします．それでは！蓮尾一郎\ http://www-mmm.is.s.u-tokyo.ac.jp/~ichiro/ ---------- Forwarded message ---------- 8th Workshop on Games for Logic and Programming Languages (GaLoP 2013) // Queen Mary, University of London // London, UK // 18-19 July // http://www.gamesemantics.org [apologies for possible cross-postings] GaLoP is an annual international workshop on game-semantic models for logics and programming languages and their applications. This is an informal workshop that welcomes work in progress, overviews of more extensive work, programmatic or position papers and tutorials as well as contributed papers and invited talks. GaLoP VIII will be held in London, UK, on 18-19 July 2013. It will be a stand-alone workshop hosted at the Mile End campus of Queen Mary, University of London. Contributions are invited on all pertinent subjects, with particular interest in game-semantic and interaction models for logics and programming languages, and applications to program analysis. Typical but not exclusive areas of interest are: * Game theory and interaction models in semantics; * Games-based program analysis and verification; * Logics for games and games for logics; * Algorithmic aspects of games; * Categorical aspects; * Programming languages and full abstraction; * Higher-order automata and Petri nets; * Geometry of interaction; * Ludics; * Epistemic game theory; * Logics of dependence and independence; * Computational linguistics. There will be no formal proceedings but the possibility of a special issue in a journal will be considered (the 2005, 2008 and 2011 workshops led to special issues in Annals of Pure and Applied Logic). // Submission Instructions // Please submit an abstract of your proposed talk on the easychair submission page below. You may also submit an accompanying paper for the talk. https://www.easychair.org/conferences/?conf=galop2013 // Important Dates // Submission: May 31 Notification: June 7 Workshop: July 18-19 // Invited speakers // * Ichiro Hasuo, Tokyo * Colin Stirling, Edinburgh * Viktor Winschel, Mannheim * Nobuko Yoshida, Imperial // Program Committee // * Ugo Dal Lago, Bologna * Dan Ghica, Birmingham * Juha Kontinen, Helsinki * Guy McCusker, Bath (co-chair) * Andrzej Murawski, Warwick * Nikos Tzevelekos, QMUL (co-chair) * Glynn Winskel, Cambridge

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Set Theory Seminar Kobe
by Joerg Brendle 18 Apr '13

18 Apr '13

Kobe Set Theory Seminar This semester the Kobe Set Theory Seminar will take place Tuesdays 1:20 to 2:50 pm in room 421 of Science and Technology Research Building 3, Kobe University. http://www.kobe-u.ac.jp/en/access/rokko/campus.htm Members and guests of the set theory groups will present their research. All talks are given in English. There is no program. For information about speakers and topics please contact Jörg Brendle. brendle(a)kurt.scitec.kobe-u.ac.jp See also the following webpage for current activities. http://kurt.scitec.kobe-u.ac.jp/~brendle/events.html ============================================================ 集合論のセミナー時限：前期・火曜日・３時限（１：２０〜２：５０）場所：神戸大学自然科学総合研究棟3号館4階421室（プレゼンテーション室）交通：阪急六甲駅またはJR六甲道駅から神戸市バス36系統「鶴甲団地」行きに乗車，「神大本部工学部前」停留所下車，徒歩すぐ． http://www.kobe-u.ac.jp/info/access/rokko/rokkodai-dai2.htm 連絡先：ブレンドレヨーグ brendle(a)kurt.scitec.kobe-u.ac.jp http://kurt.scitec.kobe-u.ac.jp/~brendle/events.html

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CFP: LENLS10 (Logic and Engineering of Natural Language Semantics 10)
by BEKKI Daisuke 17 Apr '13

17 Apr '13

（重複して受け取られた場合はご容赦ください）今年の１０月に東京で開催される LENLS 10 国際ワークショップのプログラムをお送り致します。皆様のご参加をお待ちしております。戸次大介（お茶の水女子大学／国立情報学研究所） [Apologies for multiple copies] ================================================================= FIRST CALL FOR PAPERS Logic and Engineering of Natural Language Semantics 10 (LENLS 10) Workshop Site : "Raiousha Building, Keio University" Kanagawa, Japan. http://www.keio.ac.jp/en/maps/hiyoshi.html Dates : October 27-28, 2013 Contact Person: Shunsuke Yatabe (West Japan Railway Company) Contact Email : lenls10[[at]]easychair.org Website : http://www.is.ocha.ac.jp/‾bekki/lenls/ ================================================================= Chair: Shunsuke Yatabe (West Japan Railway Company) Co-chair: Daisuke Bekki (Ochanomizu University /National Institute of Informatics) Eric McCready (Aoyama Gakuin University) LENLS is an annual international workshop on formal syntax, semantics and pragmatics. It will be held as one of the workshops of the fifth JSAI International Symposia on AI (isAI2013) (http://www.ai-gakkai.or.jp/jsai-isai/2013/) sponsored by the Japan Society for Artificial Intelligence (JSAI) (http://www.ai-gakkai.or.jp/jsai/english.html). Aims and Topics: ================ We invite submissions to this year's workshop on topics in formal semantics and pragmatics, and related fields, including but in no way limited to the following: - Dynamic syntax/semantics/pragmatics of natural language - Categorical/topological/coalgebraic approaches for natural language syntax/semantics/pragmatics - Logic and its relation to natural language and linguistic reasoning (especially dynamic logics) - Type-theoretic approaches to natural language - Formal Philosophy of language - Formal pragmatics (especially game-theoretic and utility-theoretic approaches) - Substructural expansion of Lambek Lambda Calculi - Many-valued/Fuzzy and other non-classical logics and natural language Submissions: ============ Abstracts (up to 4 pages, including figures and references) must be submitted electronically in PDF format at: https://www.easychair.org/conferences/?conf=lenls10 When his/her abstract is accepted, the author is expected to submit a full paper (10-14 pages) before the workshop. The proceedings of the workshop will be available at the conference site for registered persons. Important dates: ================ Abstract submission deadline: July 31, 2013 Notification of acceptance: August 26, 2013 Deadline for camera-ready copy: September, 2013 LENLS10: October 27-28, 2013 Tutorial Lecture: October 29, 2013 Workshop Organizers/Program Committee: ====================================== - Shunsuke Yatabe (West Japan Railway Company) - Daisuke Bekki (Ochanomizu University/National Institute of Informatics) - Alastair Butler (PRESTO JST/Tohoku University) - Eric McCready (Aoyama Gakuin University) - Koji Mineshima (Keio University) - Yoshiki Mori (University of Tokyo) - Yasuo Nakayama (Osaka University) - Katsuhiko Sano (Japan Advanced Institute of Science and Technology) - Katsuhiko Yabushita (Naruto University of Education) - Tomoyuki Yamada (Hokkaido University) - Kei Yoshimoto (Tohoku University)

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4/16, Talk by Keisuke Nakano (Univ. Electro-Communications)
by Tetsuri Moriya 16 Apr '13

16 Apr '13

みなさま、東京大学の蓮尾研究室M2の森谷です。蓮尾研究室では4月16日に電気通信大学の中野圭介さんをお迎えしてご講演いただきます。詳細は以下で、事前の登録等は一切不要です。ご興味のある方はぜひお越しください！ ============================================================= Tue 16 April 2013, 15:30-17:30 Keisuke Nakano (Univ. Electro-Communications), 2 Talks 理学部7号館1階 102教室 Room 102, School of Science Bldg. No. 7 Talk 1: Juggling meets coinduction In this talk, I will present an application of coinduction, juggling. Buhler et al. presented a mathematical theory of toss juggling by regarding a toss pattern as an arithmetic function, where the function must satisfy a condition for the pattern to be valid. In this talk, I will formalize their theory in terms of coinduction, reflecting the fact that the validity of toss juggling is related to a property of infinite phenomena. A tactic is implemented for proving the validity of toss patterns in Coq. Additionally, the completeness and soundness of a well-known algorithm for checking the validity is certified. The result exposes a practical aspect of coinductive proofs. Most part of this talk has been presented in CPP 2012. Some open problems also will be introduced. Talk 2: Metamorphism in jigsaw In this talk, I will present a new computation model for metamorphism. A metamorphism is an unfold after a fold, consuming an input by the fold then generating an output by the unfold. It is typically useful for converting data representations, e.g., radix conversion of numbers. Bird and Gibbons have shown that metamorphisms can be incrementally processed in streaming style when a certain condition holds because part of the output can be determined before the whole input is given. However, whereas radix conversion of fractions is amenable to streaming, radix conversion of natural numbers cannot satisfy the condition because it is impossible to determine part of the output before the whole input is completed. In this talk, I present a jigsaw model in which metamorphisms can be partially processed for outputs even when the streaming condition does not hold. The jigsaw model allows us to process metamorphisms in a flexible way that includes parallel computation. We also apply our model to other examples of metamorphisms. Most part of this talk is recently published in Journal of Functional Programming. Additionally, I will present some further work on this work.

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JAIST Logic Seminar Series
by Takayuki Kihara 15 Apr '13

15 Apr '13

皆様北陸先端科学技術大学院大学の木原貴行です． JAIST Logic Seminar Seriesのお知らせです．問合せ先：木原貴行北陸先端科学技術大学院大学情報科学研究科 e-mail: kihara(a)jaist.ac.jp -------------------------------------------------- * JAIST Logic Seminar Series * Date: Friday 26 April, 2013, 15:00-17:00 Place: JAIST, Collaboration room 7 (I-56) (Access: http://www.jaist.ac.jp/english/location/access.html) Speaker: Dr. Arno Pauly (University of Cambridge) Title: Synthetic Descriptive Set Theory Abstract: Typically, (effective) descriptive set theory is viewed as a study of classes of discontinuous / uncomputable functions. Inside the theory of represented spaces though, we can consider the same concepts as special cases of continuity/computability. Using category-theoretic language, an abstract and unifying framework is achieved that allows very simple formulations and proofs corresponding closely to various fundamental results in descriptive set theory. * The seminar is held as a part of the EU FP7 Marie Curie Actions IRSES project COMPUTAL (http://computal.uni-trier.de/).

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Logic-ml April 2013