Ultradiscrete limit of the spectral polynomial of the q-Heun equation
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🧮 math.CA
math-phmath.MP
keywords
polynomialspectralequationlimitultradiscreteaccessorycasescondition
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It is known that the q-Heun equation has polynomial-type solutions in some special cases, and the condition for the accessory parameter E is described by the roots of the spectral polynomial. We investigate the spectral polynomial by considering the ultradiscrete limit.
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