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Analyticity of the Cox–Ingersoll–Ross semigroup

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Abstract

We study the analyticity of the Cox–Ingersoll–Ross semigroup generated by

$$\begin{aligned} A_r u=\nu ^2 xu''+\gamma u'+\beta x u'-rx u, \end{aligned}$$

in spaces of continuous functions on \([0,+\infty )\) and we provide the full description of the domain of the generator.

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Correspondence to G. Metafune.

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Fornaro, S., Metafune, G. Analyticity of the Cox–Ingersoll–Ross semigroup. Positivity 24, 915–931 (2020). https://doi.org/10.1007/s11117-019-00716-x

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