A Riemann-Hilbert Approach to the Heun Equation

• Published in: Symmetry, Integrability and Geometry: Methods and Applications
• Date: 2018
• Main Authors: Dubrovin, B., Kapaev, A.
• Format: Article
• Language: English
• Published: Інститут математики НАН України 2018
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/209864
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: A Riemann-Hilbert Approach to the Heun Equation / B. Dubrovin, A. Kapaev // Symmetry, Integrability and Geometry: Methods and Applications. — 2018. — Т. 14. — Бібліогр.: 30 назв. — англ.

We describe the close connection between the linear system for the sixth Painlevé equation and the general Heun equation, formulate the Riemann-Hilbert problem for the Heun functions, and show how, in the case of reducible monodromy, the Riemann-Hilbert formalism can be used to construct explicit po...