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Loic Merel——The derived modular group
发布人:许全华  发布时间:2019-06-02   浏览次数:354


题目The derived modular group


报告人 Loic Merel(Universite Pierre and Maire Curie, Paris)


时间:6月12日,10:00-11:30


地点:明德楼B区201学术报告厅


摘要The modular group (SL_2(Z)) is among the most famous groups in mathematics, and the basis for the theory of modular forms etc.  Its derived subgroup is cocyclic of index 12, and the subject of a thin and not very well known literature. However, it is the source of delightful mathematics, that we will review before considering the use of this group for Manin's theory of modular symbols (Manin's theory will be recalled from scratch).