Height bound and preperiodic points for jointly regular families of rational maps

  title={Height bound and preperiodic points for jointly regular families of rational maps},
  author={Chong Gyu Lee},
  journal={arXiv: Number Theory},
  • C. Lee
  • Published 16 March 2010
  • Mathematics
  • arXiv: Number Theory
Silverman proved a height inequality for jointly regular family of rational maps and the author improved it for jointly regular pairs. In this paper, we provide the same improvement for jointly regular family; if S is a jointly regular set of rational maps, then \sum_{f\in S} \dfrac{1}{\deg f} h\bigl(f(P) \bigr) > (1+ \dfrac{1}{r}) f(P) - C where r = \max_{f\in S} r(f). 

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