The Ringel--Hall Lie algebra of a spherical object

Details The Ringel--Hall Lie algebra of a spherical object The Ringel--Hall Lie algebra of a spherical object

2011-03-07

arxiv.org/abs/1103.1241v2

Mathematics

Representation Theory

26pages

Scientific paper

For an integer $w$, let $\cs_w$ be the algebraic triangulated category generated by a $w$-spherical object. We determine the Picard group of $\cs_w$ and show that each orbit category of $\cs_w$ is triangulated and is triangle equivalent to a certain orbit category of the bounded derived category of a standard tube. When $n=2$, the orbit category $\cs_w/\Sigma^2$ is 2-periodic triangulated, and we characterize the associated Ringel--Hall Lie algebra in the sense of Peng and Xiao.

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