Root multiplicities for Nichols Algebras of diagonal type

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...

Täydet tiedot

Tallennettuna:
Bibliografiset tiedot
Päätekijä: Zheng, Ying
Muut tekijät: Heckenberger, Istvan (Prof. Dr.) (BetreuerIn (Doktorarbeit))
Aineistotyyppi: Dissertation
Kieli:englanti
Julkaistu: Philipps-Universität Marburg 2018
Aiheet:
Lyndon-Wörter
multiplicities
Lyndon words
Mathematik
Multiplizitäten
root
Wurzel
Nichols-Algebren
Nichols algebras
Mathematics
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Yhteenveto: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.
Ulkoasu:91 Seiten
DOI:10.17192/z2018.0491

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