期刊
ALGEBRA & NUMBER THEORY
卷 10, 期 3, 页码 645-664出版社
MATHEMATICAL SCIENCE PUBL
DOI: 10.2140/ant.2016.10.645
关键词
cusp form; iterated integral; noncommutative cohomology
类别
资金
- [NRF-2015049582]
- [NRF-2013R1A2A2A01068676]
We give a version of the Eichler-Shimura isomorphism with a nonabelian H-1 in group cohomology. Manin has given a map from vectors of cusp forms to a noncommutative cohomology set by means of iterated integrals. We show that Manin's map is injective but far from surjective. By extending Manin's map we are able to construct a bijective map and remarkably this establishes the existence of a nonabelian version of the Eichler-Shimura map.
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