Ultradiscrete limit of the spectral polynomial of the $q$-Heun equation

Published 28 Nov 2018 in math.CA, math-ph, and math.MP | (1811.11677v2)

Abstract: 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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