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arXiv 1809.01428math.CAmath-phmath.MPmath.QA
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$q$ -Heun方程的多项式解与超离散极限

Polynomial solutions of $q$-Heun equation and ultradiscrete limit

Kentaro Kojima, Tsukasa Sato, Kouichi Takemura

摘要:

研究了$q$ -Heun方程的多项式型解,它与拟精确解有关. $q$ -Heun方程有非零多项式型解的条件由谱多项式的根来描述,其变量是辅助参数$E$。得到了谱多项式的根均为实且相异的充分条件。我们考虑超离散极限来阐明$q$ -Heun方程的谱多项式的根和多项式型解的零点。

英文摘要:

We study polynomial-type solutions of the $q$-Heun equation, which is related with quasi-exact solvability. The condition that the $q$-Heun equation has a non-zero polynomial-type solution is described by the roots of the spectral polynomial, whose variable is the accessory parameter $E$. We obtain sufficient conditions that the roots of the spectral polynomial are all real and distinct. We consider the ultradiscrete limit to clarify the roots of the spectral polynomial and the zeros of the polynomial-type solution of the $q$-Heun equation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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