We give a geometric realization, the tagged rotation, of the AR-translation on the generalized cluster category associated to a surface with marked points and non-empty boundary, which generalizes Brustle-Zhang's result for the puncture free case. As an application, we show that the intersection of the shifts in the 3-Calabi-Yau derived category associated to the surface and the corresponding Seidel-Thomas braid group of is empty, unless is a polygon with at most one puncture (i.e. of type A or D).
机构:
Univ Missouri, Dept Math, Columbia, MO 65211 USAUniv Missouri, Dept Math, Columbia, MO 65211 USA
Celikbas, Olgur
Takahashi, Ryo
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机构:
Shinshu Univ, Fac Sci, Dept Math Sci, Matsumoto, Nagano 3908621, Japan
Univ Nebraska, Dept Math, Lincoln, NE 68588 USAUniv Missouri, Dept Math, Columbia, MO 65211 USA