"Periodicity of Y-systems"의 두 판 사이의 차이

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imported>Pythagoras0
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==expositions==
 
==expositions==
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* Volkov, 2010 [https://docs.google.com/file/d/0B8XXo8Tve1cxX29mNDlHaXJWNDA/edit Periodicity conjecture for Y-systems]
 
* Keller, Bernhard. 2008. “Cluster Algebras, Quiver Representations and Triangulated Categories”. ArXiv e-print 0807.1960. http://arxiv.org/abs/0807.1960.
 
* Keller, Bernhard. 2008. “Cluster Algebras, Quiver Representations and Triangulated Categories”. ArXiv e-print 0807.1960. http://arxiv.org/abs/0807.1960.

2013년 12월 14일 (토) 11:05 판

introduction

  • periodicity (Keller) : $Y_{\mathbf{i}}(u+2(h+h'))=Y_{\mathbf{i}}(u)$
  • half-periodicity : $Y_{\mathbf{i}}(u+(h+h'))=Y_{\sigma(\mathbf{i})}(u)$ where $\sigma$ is the involution of the pair of Dynkin diagram


expositions