ASYMPTOTICS OF THE SPECTRUM OF HEUN'S EQUATION AND OF HEUN'S FUNCTIONS

DOI10.1070/IM1992V038N03ABEH002217zbMath0788.34003OpenAlexW2058853936MaRDI QIDQ3981918

M. V. Fedoryuk

Publication date: 26 June 1992

Published in: Mathematics of the USSR-Izvestiya (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1070/im1992v038n03abeh002217

zbMATH Keywords

monodromy groupcomplex domainStokes lineWKB-estimatesHeun's surface functionspectrum of Heun's equation

Mathematics Subject Classification ID

Singular perturbations, turning point theory, WKB methods for ordinary differential equations (34E20) Asymptotic distribution of eigenvalues, asymptotic theory of eigenfunctions for ordinary differential operators (34L20) Ordinary differential equations in the complex domain (34M99)

Related Items (1)

On a class of non-self-adjoint periodic eigenproblems with boundary and interior singularities

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