References
- J. Baker, A general functional equation and its stability, Proc. Natl. Acad. Sci. USA 133 (2005), no. 6, 1657-1664.
- I. S. Chang, Y. H. Lee, and J. Roh, On the stability of the general sextic functional equation, J. Chungcheong Math. Soc. 34 (2021), no. 3, 295-306.
- I. S. Chang, Y. H. Lee, and J. Roh, Nearly general septic functional equation, J. Funct. Spaces 2021 (2021), 5643145.
- I. S. Chang, Y. H. Lee, and J. Roh, Representation and stability of general nonic functional equation, Mathematics 11 (2023), no. 14, 3173.
- Z. Gajda, On stability of additive mappings, Int. J. Math. Math. Sci. 14 (1991), no. 3, 431-434. https://doi.org/10.1155/S016117129100056X
- P. Gavruta, A generalization of the Hyers-Ulam-Rassias stability of approximately additive mappings, J. Math. Anal. Appl. 184 (1994), 431-436. https://doi.org/10.1006/jmaa.1994.1211
- D. H. Hyers, On the stability of the linear functional equation, Proc. Natl. Acad. Sci. USA 27 (1941), 222-224. https://doi.org/10.1073/pnas.27.4.222
- G. Isac and T. M. Rassias, On the Hyers-Ulam stability of ψ-additive mappings, J. Approx. Theory 72 (1993), 131-137. https://doi.org/10.1006/jath.1993.1010
- S. S. Jin and Y. H. Lee, Hyers-Ulam-Rassias stability of a functional equation related to general quadratic mappings, Honam Math. J. 39 (2017), no. 3, 417-430.
- S. S. Jin and Y. H. Lee, Stability of the general quintic functional equation, Int. J. Math. Anal. (Ruse) 15 (2021), no. 6, 271-282. https://doi.org/10.12988/ijma.2021.912360
- S. S. Jin and Y. H. Lee, Hyers-Ulam-Rassias stability of a general septic functional equation, J. Adv. Math. Comput. Sci. 37 (2022), no. 12, 12-28.
- S. S. Jin and Y. H. Lee, Hyperstability of a general quintic functional equation and a general septic functional equation, J. Chungcheong Math. Soc. 36 (2023), no. 2, 107-123.
- K.-W. Jun and H.-M. Kim, On the Hyers-Ulam-Rassias stability of a general cubic functional equation, Math. Inequal. Appl. 6 (2003), 289-302.
- Y.-H. Lee, On the generalized Hyers-Ulam stability of the generalized polynomial function of degree 3, Tamsui Oxf. J. Math. Sci. 24 (2008), no. 4, 429-444.
- Y.-H. Lee, On the Hyers-Ulam-Rassias stability of the generalized polynomial function of degree 2, J. Chungcheong Math. Soc. 22 (2009), no. 2, 201-209.
- Y.-H. Lee, On the Hyers-Ulam-Rassias stability of a general quartic functional equation, East Asian Math. J. 35 (2019), no. 3, 351-356.
- Y.-H. Lee, On the Hyers-Ulam-Rassias stability of a general quintic functional equation and a general sextic functional equation, Mathematics 7 (2019), no. 6, 510.
- Y.-H. Lee and K. W. Jun, A generalization of the Hyers-Ulam-Rassias stability of Jensen's equation, J. Math. Anal. Appl. 238 (1999), no. 1, 305-315. https://doi.org/10.1006/jmaa.1999.6546
- Y.-H. Lee, and S.-M. Jung, A fixed point approach to the stability of a general quartic functional equation, J. Math. Comput. Sci. 20 (2020), 207-215. https://doi.org/10.22436/jmcs.020.03.03
- Y.-H. Lee, and S.-M. Jung, Generalized Hyers-Ulam stability of some cubic-quadratic-additive type functional equations, Kyungpook Math. J. 60 (2020), no. 1, 133-144.
- Y.-H. Lee, S.-M. Jung, and M.T. Rassias, Uniqueness theorems on functional inequalities concerning cubic-quadratic-additive equation, J. Math. Inequal. 12 (2018), 43-61. https://doi.org/10.7153/jmi-2018-12-04
- Y.-H. Lee and J. Roh, Some remarks concerning the general octic functional equation, J. Math. 2023 (2023), 2930056.
- Th. M. Rassias, On the stability of the linear mapping in Banach spaces, Proc. Amer. Math. Soc. 72 (1978), 297-300. https://doi.org/10.1090/S0002-9939-1978-0507327-1
- J. Roh, Y.-H. Lee, and S.-M. Jung, The stability of a general sextic functional equation by fixed point theory, J. Funct. Spaces 2020 (2020), 6497408.
- S. M. Ulam, A Collection of Mathematical Problems, Interscience, New York, 1960.