Asymptotic shifting numbers in triangulated categories
Asymptotic shifting numbers in triangulated categories
复制标题
三角类别中的渐近平移数
DOI:
10.1016/j.aim.2023.109163
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发表时间:
2023
影响因子:
1.7
通讯作者:
Filip, Simion
中科院分区:
文献类型:
--
作者:
Fan, Yu-Wei;Filip, Simion
We study invariants, called shifting numbers, that measure the asymptotic amount by which an autoequivalence of a triangulated category translates inside the category. The invariants are analogous to Poincaré translation numbers that are widely used in dynamical systems. We additionally establish that in some examples the shifting numbers provide a quasimorphism on the group of autoequivalences. Additionally, the shifting numbers are related to the entropy function introduced by Dimitrov, Haiden, Katzarkov, and Kontsevich, as well as the phase functions of Bridgeland stability conditions.
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