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Ptolemy relations for punctured discs
Baur, Karin...
Ptolemy relations for punctured discs by Baur, Karin ( Author )
N.A
01-01-2007
We construct frieze patterns of type D_N with entries which are numbers of matchings between vertices and triangles of corresponding triangulations of a punctured disc. For triangulations corresponding to orientations of the Dynkin diagram of type D_N, we show that the numbers in the pattern can be interpreted as specialisations of cluster variables in the corresponding Fomin-Zelevinsky cluster algebra.
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Article
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36.88 KB
English
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MYR 0.00
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http://arxiv.org/abs/0711.1443
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