What is an Axiom ?

Click HERE for the full version.
This paper has been published in
J.Acacio de Barros and Décio Krause (eds),
A True Polymath - A Tribute to Francisco Antonio Doria,
College Publications, London, 2020, pp.122-142.
It has been be presented at the
2nd International Congress of Russian Society for History and Philosophy of Science
St. Petersburg State University, Russia, November 27-29, 2020