The computations in this notebook correspond to the Example 5.9 of the joint paper with S. Bannai, T. Shirane, H. Tokunaga, Torsion divisors of plane curves and Zariski pairs, Algebra i Analiz, 34:5 (2022), 1–22, see also St. Petersburg Math. J. 34 (2023), 721-736, DOI:10.1090/spmj/1776. You need an installation of Sagemath.
If you cannot access a Sagemath installation, try this:
