Jornet, MarcNieto Roig, Juan José2026-03-252026-03-252025-03-15Jornet, M., & Nieto, J. J. (2025). The Peano–Sard theorem for fractional operators with Mittag-Leffler kernel and application in classical numerical approximation. Journal of Computational and Applied Mathematics, 457. https://doi.org/10.1016/J.CAM.2024.116262https://hdl.handle.net/10347/46528We investigate fractional Peano kernels for continuous linear functionals, in the context of differintegral operators with Mittag-Leffler kernel. New bounds for polynomial interpolation are obtained and numerical computations are shown, indicating improvements.eng© 2024 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license.Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Bounded kernelFractional operatorInterpolation errorPeano kerneljournal article2025-12-0410.1016/J.CAM.2024.1162620377-0427open access