Algebraic structure of the fundamental group of orbits of smooth functions on the 2-torus

• Date: 2025
• Author Affiliations: Богдан Фещенко — Інститут математики НАН України
• Keywords: keywords
• Main Authors: Feshchenko, Bohdan, Фещенко, Богдан
• Format: Article
• Language: Ukrainian
• Published: Інститут математики НАН України 2025
• Online Access: https://trim.imath.kiev.ua/index.php/trim/article/view/550
• Journal Title: Transactions of Institute of Mathematics of NAS of Ukraine

This review paper is devoted to the description of the algebraic structure of the fundamental group of orbits of functions with isolated singularities on 2-torus with respect to the action of the group of diffeomorphisms of the 2-torus