2022/06/11 by Masao Okazaki, Okazaki, Masao
Mathematics · #Analytic Number Theory Research #Algebraic Geometry and Number Theory #Limits and Structures in Graph Theory
paper · pdf · doi:10.48550/arxiv.2206.05440
It is fundamental in number theory to calculate lower bounds for height functions. Grizzard studied lower bounds for the Weil height in a relative setting. Vidaux and Videla introduced the Northcott number for a set A⊂ℚ. It bounds the Weil height on A from below, outside the zero-height points and the finitely many small-height points. Pazuki, Technau, and Widmer introduced the weighted Weil heights. These heights generalize both the absolute and relative Weil heights. In this paper, we introduce a relative version of the Northcott number related to the weighted Weil height. We also give a field extension whose Northcott number equals a given positive number. The work is a relative version of the previous work of the author and Sano on the Northcott numbers for the weighted Weil heights.