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20082026
most citedSharp spectral stability estimates via the Lebesgue measure of domains for higher order elliptic operators

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math.CA2016★ 1 cited

The violation of a uniqueness theorem and an invariant in the application of Poincaré--Perron theorem to Heun's equation

Yoon-Seok Choun

The domain of convergence of a Heun function obtained through the Poincaré--Perron (P--P) theorem is not absolute convergence but conditional one [2]. We show that a uniqueness the…