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math.DS2023★ 1 cited
Space spanned by characteristic exponents
Zhuchao Ji, Junyi Xie, Geng-Rui Zhang
We prove several rigidity results on multiplier spectrum and length spectrum. For example, we show that for every non-exceptional rational map $f:\mathbb{P}^1(\mathbb{C})\to\mathbb…
math.NT2023
Realizability of Some Combinatorial Sequences
Geng-Rui Zhang
A sequence of non-negative integers is called realizable if there is a self-map on a set such that is equal to the number of periodic po…