Root multiplicities for Nichols Algebras of diagonal type
In this thesis we chase the root multiplicities for Nichols algebras of diagonal type. Based on an inequality for the number of Lyndon words and an identity for the shuffle map, we illustrate when the multiplicity of a root is smaller than in the tensor algebra of a braided vector space of diagonal...
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Định dạng: | Dissertation |
Ngôn ngữ: | Tiếng Anh |
Được phát hành: |
Philipps-Universität Marburg
2018
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Những chủ đề: | |
Truy cập trực tuyến: | Bài toàn văn PDF |
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Tóm tắt: | In this thesis we chase the root multiplicities for Nichols algebras of diagonal type. Based on an inequality for the number of Lyndon words and an identity for the shuffle map, we illustrate when the multiplicity of a root is smaller than in the tensor algebra of a braided vector space of diagonal type, and determine the dimension of the kernel of the shuffle map considered as an operator acting on the free algebra. Moreover, we give an complete expression for the multiplicities of a class of roots for Nichols algebras of diagonal type of rank two. |
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Mô tả vật lý: | 91 Seiten |
DOI: | 10.17192/z2018.0491 |