A General Version of Carathéodory's Existence and Uniqueness Theorem

Fuente: arXiv
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Main Authors: de Carvalho-Neto, Paulo M., Frota, Cícero L., Torelli, Pedro G. P.
Format: Preprint
Published: 2025
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_version_ 1866916768892583936
author de Carvalho-Neto, Paulo M.
Frota, Cícero L.
Torelli, Pedro G. P.
author_facet de Carvalho-Neto, Paulo M.
Frota, Cícero L.
Torelli, Pedro G. P.
contents In this paper, we establish a general version of Carathéodory's existence and uniqueness theorem for a semilinear system of integro-differential equations arising from differential equations with distinct orders of Caputo fractional derivative. The main result of our work demonstrates that the integrability order of the Carathéodory function $f$ must be at least greater than the maximum of the reciprocals of all differentiation orders in the system; otherwise, even the existence of a solution cannot be guaranteed.
format Preprint
id arxiv_https___arxiv_org_abs_2505_24516
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle A General Version of Carathéodory's Existence and Uniqueness Theorem
de Carvalho-Neto, Paulo M.
Frota, Cícero L.
Torelli, Pedro G. P.
Classical Analysis and ODEs
Functional Analysis
26A33, 34A08, 34A12
In this paper, we establish a general version of Carathéodory's existence and uniqueness theorem for a semilinear system of integro-differential equations arising from differential equations with distinct orders of Caputo fractional derivative. The main result of our work demonstrates that the integrability order of the Carathéodory function $f$ must be at least greater than the maximum of the reciprocals of all differentiation orders in the system; otherwise, even the existence of a solution cannot be guaranteed.
title A General Version of Carathéodory's Existence and Uniqueness Theorem
topic Classical Analysis and ODEs
Functional Analysis
26A33, 34A08, 34A12
url https://arxiv.org/abs/2505.24516