Weyl groupoids of rank two and continued fractions

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  • University of Kaiserslautern
  • Ludwig-Maximilians-Universität München (LMU)
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Original languageEnglish
Pages (from-to)317-340
Number of pages24
JournalAlgebra and Number Theory
Volume3
Issue number3
Publication statusPublished - 1 Dec 2009
Externally publishedYes

Abstract

We present a relationship between continued fractions and Weyl groupoids of Cartan schemes of rank two. This allows one to decide easily if a given Cartan scheme of rank two admits a finite root system. We obtain obstructions and sharp bounds for the entries of the Cartan matrices. Cartan matrix, continued fraction, Nichols algebra, Weyl groupoid.

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Weyl groupoids of rank two and continued fractions. / Cuntz, Michael; Heckenberger, István.
In: Algebra and Number Theory, Vol. 3, No. 3, 01.12.2009, p. 317-340.

Research output: Contribution to journalArticleResearchpeer review

Cuntz M, Heckenberger I. Weyl groupoids of rank two and continued fractions. Algebra and Number Theory. 2009 Dec 1;3(3):317-340. doi: 10.2140/ant.2009.3.317
Cuntz, Michael ; Heckenberger, István. / Weyl groupoids of rank two and continued fractions. In: Algebra and Number Theory. 2009 ; Vol. 3, No. 3. pp. 317-340.
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