부산대학교 도서관

This document is a preface to a focus issue of the Journal of Physics A: Mathematical and Theoretical. The focus issue is centered around the topics of resurgent asymptotics, Painlevé equations, and quantum field theory. The preface provides background information on the recent breakthroughs in asymptotic analysis and the concept of resurgence. It also highlights the interplay between Painlevé equations and quantum field theory, including the discovery of the "Kyiv formula" which relates tau-functions of the Painlevé equations to partition functions in quantum field theories. The focus issue contains various articles that explore these topics and showcase the exciting work being done in physics and mathematics using new tools from the theory of resurgence. [Extracted from the article]