These are definitely not the original axioms posted by Peano, but are named in his honor. Some types of the Peano axioms have 1 rather than 0. In normal arithmetic, the successor of x displaystyle x I'm Japanese and have not lived in Western countries, and I'm inquiring these questions https://vegetarianayurvedicremedies.school.blog/2025/08/18/buy-herbal-medicines-online-with-cureayus-safe-remedies/