arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1105.1763math.DS
收藏

在瑟斯顿的撤退地图上

On Thurston's pullback map

Xavier Buff, Adam Epstein, Sarah Koch, Kevin Pilgrim

摘要:

设f:P^1 \to P^1是具有有限后临界集P_f的有理映射. Thurston证明了f诱导Teichmueller空间T在P_f上的一个全纯映射σ_f到自身,其基点固定于恒等映射(P^1,P_f)\to(P^1,P_f).我们给出了这类映射f的显式例子,证明了下列情况可能发生:(1)基点是吸引不动点,σ f的象是开稠密的,σ f是它的象上的覆叠映射;(2)基点是超吸引不动点,σ是满射,σ是分歧Galois覆盖;(3)σ f是常数.

英文摘要:

Let f: P^1 \to P^1 be a rational map with finite postcritical set P_f. Thurston showed that f induces a holomorphic map σ_f of the Teichmueller space T modelled on P_f to itself fixing the basepoint corresponding to the identity map (P^1, P_f) \to (P^1, P_f). We give explicit examples of such maps f showing that the following cases may occur: (1) the basepoint is an attracting fixed point, the image of σ_f is open and dense, and the map σ_f is a covering map onto its image; (2) the basepoint is a superattracting fixed point, σis surjective, and σis a ramified Galois covering, (3) σ_f is constant.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑