Ulam Stability Results of Functional Equations in Modular Spaces and 2-Banach Spaces

نویسندگان

چکیده

In this work, we investigate the refined stability of additive, quartic, and quintic functional equations in modular spaces with without Δ2-condition using direct method (Hyers method). We also examine Ulam 2-Banach space method. Additionally, a suitable counterexample, eventually demonstrate that these fails certain case.

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ژورنال

عنوان ژورنال: Mathematics

سال: 2023

ISSN: ['2227-7390']

DOI: https://doi.org/10.3390/math11020371