November 2024 - Seminar-Announce - snurep.crystalline.site

표현론 강연 안내 (On finite-dimensional representations of quantum affine superalgebras of type A)
by Soo-Hong Lee (SNU) 23 Nov '24

23 Nov '24

구독자 여러분께, 안녕하세요, 12월 2일에 예정된 표현론 강연에 대해 안내드립니다. 강연 상세 정보를 하단에 첨부하였으며, https://qsms.math.snu.ac.kr/board_sjXR83/3084 에서도 확인하실 수 있습니다. 관심 있으신 분들의 많은 참여 바랍니다. 감사합니다. 이수홍 올림 _______________________________________________ Date: 2024-12-02 (월요일) 15:00 ~ 17:00 Place: 129-406 Speaker: 이신명 (고등과학원) Title: On finite-dimensional representations of quantum affine superalgebras of type A Abstract: Although there has been several progress on finite-dimensional representations of quantum affine superalgebras, most of key results in non-super theory are still missing. This talk aims to demonstrate difficulties and peculiarities arising in super theory. For this, we first review what is known (and not known) about finite-dimensional representations of quantum affine superalgebras of type A, mainly in terms of Drinfeld presentation and from purely representation-theoretic point of view. Then we discuss some super phenomena and hence which kind of statements can be expected for super, including the theory of q-characters.

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Fwd: lecture series on the mixed quantum group
by 이수홍 / 학생 / 수리과학부 12 Nov '24

12 Nov '24

구독자 여러분께, Mixed quantum group에 대한 zoom 강의에 대해 알려드립니다. 관심 있으신 분들의 많은 참여 바랍니다. 이수홍 올림 ---------- Forwarded message ---------- From: Jae-Hoon Kwon <jaehoonkw(a)gmail.com> Date: Nov 12, 2024, 2:25 PM +0900 To: Soo Hong Lee <sshh2662(a)snu.ac.kr> Subject: Fwd: lecture series on the mixed quantum group > > Dear colleagues, > > I'm writing to advertise a lecture series on the mixed quantum group given by Quan Situ at POSTECH on November 19 and 21. The mixed quantum group is a version of the quantum group at a root of unity interpolating between Lustzig's version and the De Concini-Kac version; its structure and category (O) of representations have recently been of interest in representation theory (connections with Lustzig's quantum group, the small quantum group, KL theory and geometry) as well as in number theory (fundamental local equivalence, metaplectic local Langlands etc.). > > The lectures will be on zoom. See below for details. I would be grateful if you can forward this message to anyone who might be interested in the talks. > > If you have any questions about the lecture series please let me know. > > With best wishes, > Valentin > > ####################################### > > Lecture Series on the hybrid (mixed) quantum group > Title: Hybrid quantum group and its representation theory > Speaker: Quan Situ > Affiliation: Université Clermont Auvergne > Dates: November 19 and November 21 > Time: 6pm-8pm/8:30pm South Korea time > Website (has all the info, zoom links etc. ): buciumas.github.io/postech-representation-theory/index > Zoom link I (November 19): us06web.zoom.us/j/9450725725?pwd=MldrQkg3TURkOTEwQy92U1gzOHVUdz09&omn=89681414519 > Zoom link II (November 21): us06web.zoom.us/j/9450725725?pwd=MldrQkg3TURkOTEwQy92U1gzOHVUdz09&omn=81861224988 > Abstract: The hybrid (or mixed) quantum group is a quantum algebra with triangular decomposition whose positive part is given by the one of Lusztig’s quantum group, and whose negative part is given by the one of De Concini-Kac quantum group. Its category O can be viewed as a quantum analogue of the BGG category O for semi-simple Lie algebra. In the first talk, I will start by recalling basic results on structures and representations of Lusztig’s quantum group, De Concini-Kac quantum group and small quantum group. Then I will introduce the hybrid quantum group and its relation with the quantum algebras above. I will also introduce its category O and discuss some fundamental structures, e.g. block decomposition, linkage principle, BGG reciprocity and translation functors. In the second talk, I will focus on the principal block and the Steinberg block of this category O. The main result is equivalences from these blocks to coherent-sheaf-theoretic incarnations of the (singular) affine Hecke category. As an application, the principal block is a categorification of the periodic Hecke module, and in particular the (graded) multiplicity of simple module inside Verma module is given by the “generic Kazhdan-Lusztig polynomial”.

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Fwd: 大阪公立大学理学国際教育研究センター(11/8)
by 이수홍 / 학생 / 수리과학부 07 Nov '24

07 Nov '24

구독자 여러분께, Quantum affine algebra 관련 talk 하나를 소개해 드립니다. 관심 있으신 분의 많은 참여 바랍니다. 이수홍 올림 ---------- Forwarded message ---------- From: 'Yoshiyuki Kimura' via Minami Osaka Daisu Seminar <modseminar(a)googlegroups.com> Date: Nov 7, 2024, 12:15 AM +0900 To: modseminar(a)googlegroups.com Subject: 大阪公立大学理学国際教育研究センター(11/8) > 皆様 > > 以下の要領にて、大阪公立大学理学国際教育研究センターの研究セミナーが開催されます。 > > タイトル: Shifted quantum affine algebras and cluster algebras > 日時: 11月8日（木）16:45～17:45 > 会場: 理学部E棟 4階 E408 > > アブストラクト: > This is a report on a joint work with Christof Geiss and David Hernandez (arXiv:2401.04616). Shifted quantum affine algebras have been introduced by Finkelberg and Tsymbaliuk in their study of quantized K-theoretic Coulomb branches of certain quiver gauge theories. Their representation theory has been studied by Hernandez, who constructed a category O containing finite-dimensional and infinite-dimensional representations. We introduce a new class of infinite rank cluster algebras associated with A-D-E root systems, and show that suitable completions of these cluster algebras are isomorphic to the Grothendieck rings of the category O of the corresponding shifted quantum affine algebras. In this isomorphism, the cluster variables of the initial seed are mapped to certain Q-variables and the most interesting first step mutations are instances of the QQ-system relations studied recently by Frenkel and Hernandez (arXiv:2312.13256). We conjecture that the images of all cluster monomials are classes of simple objects of O. We prove the conjecture in type A_1. We also show that it holds for the subcategory C of O whose objects are the finite-dimensional representations. > > Zoomリンク: https://omu-ac-jp.zoom.us/j/95574428004?pwd=5Ipu0bO5VqouFxIPhZ9JjurPHalnZy.1 > ミーティングID: 955 7442 8004 > パスコード: 959143 > > 皆様のご参加をお待ちしております。 > > 少しフォーマットも整えてあります。よろしければご確認ください。 > > -- > Yoshiyuki Kimura > Faculty of Liberal Arts, Sciences and Global Education > Osaka Metropolitan University > 1-1 Gakuen-cho, Nakaku, > Sakai, Osaka 599-8531, > Japan > Research map: http://researchmap.jp/ysykmr/ > -- > You received this message because you are subscribed to the Google Groups "Minami Osaka Daisu Seminar" group. > To unsubscribe from this group and stop receiving emails from it, send an email to modseminar+unsubscribe(a)googlegroups.com. > To view this discussion visit https://groups.google.com/d/msgid/modseminar/9ba7a32a-a6e3-481d-a291-c84d80….

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표현론 학회 안내 (CART 2024)
by Soo-Hong Lee (SNU) 06 Nov '24

06 Nov '24

구독자 여러분께, 다음달에 개최 예정인 표현론 학회에 대해 안내드립니다. Conference on Algebraic Representation Theory (CART) 2024 https://qsms.math.snu.ac.kr/CART2024 관심 있으신 분들의 많은 참여 바라며, 참가하실 경우 웹사이트에서 등록해주시기 바랍니다. 감사합니다. 이수홍 올림

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Fwd: [FPSAC] FPSAC 2025 - Second Announcement
by Soo-Hong Lee (SNU) 06 Nov '24

06 Nov '24

구독자 여러분께, 내년 여름에 홋카이도에서 개최될 FPSAC 2025 관련 정보를 전달해 드립니다. 참가를 희망하는 학생은 권재훈 교수님께 연락 드리시기 바랍니다. 감사합니다. 이수홍 올림 ---------- Forwarded message --------- From: Travis Scrimshaw <tcscrims(a)gmail.com [mailto:tcscrims@gmail.com]> Date: Tue, Nov 5, 2024 at 4:10 PM Subject: [FPSAC] FPSAC 2025 - Second Announcement To: <fpsac2025(a)math.sci.hokudai.ac.jp [mailto:fpsac2025@math.sci.hokudai.ac.jp]> Dear friends of the conference series "Formal Power Series and Algebraic Combinatorics"! Please forward this email to anyone who might be interested! If you wish to be added to this mailing list, please visit https://lists.ruhr-uni-bochum.de/mailman/listinfo/fpsac-announcements [https://lists.ruhr-uni-bochum.de/mailman/listinfo/fpsac-announcements] This is the second announcement for FPSAC 2025 and a reminder that the deadline for submitting your extended abstract is on Friday, November 15th (less than 2 weeks from today). ===================== FPSAC 2025 37th Annual International Conference on Formal Power Series and Algebraic Combinatorics ===================== July 21-25, 2025 Hokkaido University, Japan https://www.math.sci.hokudai.ac.jp/sympo/fpsac2025/ [https://www.math.sci.hokudai.ac.jp/sympo/fpsac2025/] ===================== Topics: All aspects of combinatorics and their relations with other parts of mathematics, physics, computer science, and biology. Conference program: * Invited lectures, contributed presentations, poster sessions, and software demonstrations. There will be no parallel sessions. * FPSAC 2025 is planned as an in-person event. Given sufficient interest, we plan to offer participation via Zoom for participants who are unable to attend in person. Official language: * English Invited speakers: * Matthias Beck (San Francisco State University, United Stated) * Joanna Ellis-Monaghan (Korteweg-de Vries Instituut voor Wiskunde, Universiteit van Amsterdam, Netherlands) * Christoph Koutschan (RICAM, Austrian Academy of Sciences, Austria) * Jae-Hoon Kwon (Seoul National University, South Korea) * Stephen Melczer (University of Waterloo, Canada) * Mateusz Michałek (Universität Konstanz, Germany) * Maki Nakasuji (Sophia University and Tohoku University, Japan) * Jessica Striker (North Dakota State University, United States) * Karen Yeats (University of Waterloo, Canada) Program Committee co-chairs: * Satoshi Murai (Waseda University, Japan) * Soichi Okada (Nagoya University, Japan) * Mercedes Rosas (Universidad de Sevilla, Spain) The full program committee can be found in both of the following locations: * https://www.math.sci.hokudai.ac.jp/sympo/fpsac2025/committees/ [https://www.math.sci.hokudai.ac.jp/sympo/fpsac2025/committees/] * http://fpsac.org/confs/fpsac-2025/ [http://fpsac.org/confs/fpsac-2025/] Organizing Committee chair: * Yasuhide Numata (Hokkaido University, Japan) Call for papers and posters: * Authors are invited to submit extended abstracts of at most twelve (12) pages by November 15, 2024. Accepted extended abstracts will be published in a volume of Séminaire Lotharingien de Combinatoire dedicated to FPSAC 2025. * Submissions are now open. Instructions for submissions are available on the conference website: https://www.math.sci.hokudai.ac.jp/sympo/fpsac2025/submissions/ [https://www.math.sci.hokudai.ac.jp/sympo/fpsac2025/submissions/] Extended abstracts will need to be submitted through the SoftConf website: https://softconf.com/p/fpsac2025/ [https://softconf.com/p/fpsac2025/] * Please note that for each submission, you must indicate which author will present the work, and that they are expected to present in-person. See https://fpsac.org/about/ [https://fpsac.org/about/] for a statement on how in-person participation contributes to the goals of FPSAC. Software demonstrations: * Demonstrations of software relevant to the topics of the conference are encouraged and should be submitted by March 15, 2025. Instructions for submission will be available on the conference website. Best student paper award: * In an ongoing FPSAC tradition, an award will be made for the best paper submitted by a (under)graduate student. Students submitting extended abstracts are invited to indicate their eligibility for this award. Participant support: * There will be partial support available for participants. All requests should be sent by March 15, 2025. Details for funding applications will be available on the conference website in due time. Important dates: All important dates are listed at https://www.math.sci.hokudai.ac.jp/sympo/fpsac2025/ [https://www.math.sci.hokudai.ac.jp/sympo/fpsac2025/] * Deadline for paper/poster submissions is November 15, 2024 * Registration opens on February 15, 2025 * Deadline for travel support requests is March 15, 2025 * Deadline for software demonstration submissions is March 15, 2025 * Early-bird registration ends on April 15, 2025 If you have any questions, you can contact us at fpsac2025(a)math.sci.hokudai.ac.jp [mailto:fpsac2025@math.sci.hokudai.ac.jp]. Further information will be provided in later announcements. If you wish to be removed from this mailing list, please visit https://lists.ruhr-uni-bochum.de/mailman/listinfo/fpsac-announcements [https://lists.ruhr-uni-bochum.de/mailman/listinfo/fpsac-announcements] The FPSAC2025 Local Organizing Committee Kyouko Kimura, Nanao Kita, Tomoo Matsumura, Yasuhide Numata, Travis Scrimshaw -- FPSAC-announcements mailing list FPSAC-announcements(a)lists.ruhr-uni-bochum.de [mailto:FPSAC-announcements@lists.ruhr-uni-bochum.de] https://lists.ruhr-uni-bochum.de/mailman/listinfo/fpsac-announcements [https://lists.ruhr-uni-bochum.de/mailman/listinfo/fpsac-announcements]

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