Abstract
Let \({\alpha}\) be an orientation-preserving homeomorphism of \({[0,\infty]}\) onto itself with only two fixed points at 0 and \({\infty}\), whose restriction to \({\mathbb{R}_+=(0,\infty)}\) is a diffeomorphism, and let \({U_\alpha}\) be the corresponding isometric shift operator acting on the Lebesgue space \({L^p(\mathbb{R}_+)}\) by the rule \({U_\alpha f=(\alpha')^{1/p}(f\circ\alpha)}\). We prove criteria for the one-sided invertibility of the binomial functional operator \({aI-bU_\alpha}\) on the spaces \({L^p(\mathbb{R}_+)}\), \({p\in(1,\infty)}\), under the assumptions that a, b and \({\alpha'}\) are bounded and continuous on \({\mathbb{R}_+}\) and may have slowly oscillating discontinuities at 0 and \({\infty}\).
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This work was partially supported by the Fundação para a Ciência e a Tecnologia (Portuguese Foundation for Science and Technology) through the projects UID/MAT/00297/2013 (Centro de Matemática e Aplicações) and UID/MAT/04721/2013 (Centro de Análise Funcional, Estruturas Lineares e Aplicações). Yuri I. Karlovich was also supported by the SEP-CONACYT Projects No. 168104 and No. 169496 (México).
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Karlovich, A.Y., Karlovich, Y.I. & Lebre, A.B. One-Sided Invertibility Criteria for Binomial Functional Operators with Shift and Slowly Oscillating Data. Mediterr. J. Math. 13, 4413–4435 (2016). https://doi.org/10.1007/s00009-016-0753-1
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DOI: https://doi.org/10.1007/s00009-016-0753-1