Effective Approximation to Complex Algebraic Numbers by Algebraic Numbers of Bounded Degree
arXiv:2302.05445
Abstract
We establish the first effective improvements on the Liouville inequality for approximation to complex non-real algebraic numbers by complex algebraic numbers of degree at most 4.
Updated with corrections, in particular to the statement and proof of Thm 2.4. Presentation of proofs is also considerably improved following referee feedback. Final version, appears in Trans. AMS