All articles in Mathematics (ISSN 2227-7390) Vol 10, Issue 12, are now freely available to access, read and download: https://fal.cn/3qjol COVER STORY: The theory of finitely supported structures is used to manage very large sets with a certain degree of symmetry. This framework generalizes the classical set theory of Zermelo–Fraenkel by infinitely allowing many basic elements with no internal structure (atoms) and by equipping classical sets with group actions of the permutation group over thes