授業の目的 【日本語】 Goals of the Course(JPN)   

授業の目的 【英語】 Goals of the Course   The goal of the course is to develop a good understanding of basic concepts and results in representation theory. Highlights include the structure of finite dimensional representations of symmetric groups and of the compact Lie groups SU(2) and SO(3), as well as the PeterWeyl theorem and basic notions related to Lie groups. 


到達目標 【日本語】 Objectives of the Course(JPN))   

到達目標 【英語】 Objectives of the Course   The objectives of the course are to develop a good understanding of basic concepts and results in representation theory. Highlights include the structure of finite dimensional representations of symmetric groups and of the compact Lie groups SU(2) and SO(3), as well as the PeterWeyl theorem and basic notions related to Lie groups. 


授業の内容や構成 Course Content / Plan   Here is a preliminary list of the content of each of the lectures in the course: Lecture 1: Introduction and examples. Lecture 2: Complete reducibility and semisimplicity. Lecture 3: Unitarity of finite dimensional complex representations. Lecture 4: Dual representation, tensor product of representations. Lecture 5: Extension and restriction of scalars. Lecture 6: Schur's lemma and its applications. Lecture 7: Character theory for finite groups. Lecture 8: Transitive group actions. Schur orthogonality. Lecture 9: Sixfunctor formalism for QCoh([G\X]). Lecture 10: Induction and restriction. Lecture 11: Representations of symmetric groups. Lecture 12: The classical groups. Lecture 13: The PeterWeyl theorem. Lecture 14: Smooth manifolds. Lecture 15: Lie groups. 


履修条件 Course Prerequisites   A good knowledge of linear algebra is essential. Some knowledge of abstract algebra and pointset topology is helpful. 


関連する科目 Related Courses   Representation theory is a mathematical way of encoding symmetries. It is used broadly in mathematics, physics, chemistry, and other fields. 


成績評価の方法と基準 Course Evaluation Method and Criteria   Grading will be based on weekly problem sets. 


教科書・テキスト Textbook   Notes will be made available for each lecture. 


参考書 Reference Book   Ernest B. Vinberg. Linear representations of groups. Translated from the 1985 Russian original by A. Iacob. Reprint of the 1989 translation. Modern Birkhäuser Classics. Birkhäuser/Springer, New York, 2010. vii+146 pp. ISBN: 9783034800624. 


課外学習等（授業時間外学習の指示） Study Load(Selfdirected Learning Outside Course Hours)   Lectures are 90 minutes per week. In addition, there are weekly homework assignments. You should expect to spend 90 minutes per week to complete the homework. 


注意事項 Notice for Students   You learn by doing. So please make sure to complete *all* weekly problem sets. 


他学科聴講の可否 Propriety of Other department student's attendance   

他学科聴講の条件 Conditions of Other department student's attendance   Please consult lecturer at larsh@math.nagoyau.ac.jp. 


レベル Level   

キーワード Keyword   Representations, sixfunctor formalism, the PeterWeyl theorem, Lie groups, SU(2). 


履修の際のアドバイス Advice   The English version of Wikipedia is a great source. It is both quite reliable, and it often gives examples that are particularly useful for nonexpert readers. 


授業開講形態等 Lecture format, etc.   Lectures are 90 minutes per week. Notes will be made available at NUCT before each lecture. 


遠隔授業（オンデマンド型）で行う場合の追加措置 Additional measures for remote class (ondemand class)   Participants, who are unable to attend classroom lectures, can ask for video recordings of lectures. Please write lecturer at larsh@math.nagoyau.ac.jp to request video recordings. 

