Title: Reconstructing number fields from Galois groups, after Neukirch, Uchida and Hoshi
Speaker: Fucheng Tan (Shanghai Jiao Tong University)
Time: 2016-9-5, 13:30—14:30
Place: 610
Abstract: The famous Neukirchi-Uchida theorem from 1970's tells us that the isomorphism class of a number field is completely determined by the isomorphism class of the corresponding absolute Galois group. More recently, Y. Hoshi provided a functorial reconstruction of the number field, from (certain quotient of) its absolute Galois group. Such a construction uses the Neukirch-Uchida theorem. In this talk, I will recall the Neukirch-Uchida theorem and outline Hoshi's construction.
Attachment:

中国科学院晨兴数学中心2014-2019版权所有 京ICP备05002806号

北京市海淀区中关村东路55号 邮政编码：100190

电话：86-10-82541165 Email: mcmadmin@math.ac.cn