@article{3024644, title = "Cubic functional equations on restricted domains of lebesgue measure zero", author = "Choi, C.-K. and Chung, J. and Ju, Y. and Rassias, J.", journal = "CANADIAN MATHEMATICAL BULLETIN", year = "2017", volume = "60", number = "1", pages = "95-103", publisher = "Canadian Mathematical Society", issn = "0008-4395", doi = "10.4153/CMB-2016-041-4", abstract = "Let X be a real normed space, Y a Banach space, and f f X → Y. We prove the Ulam-Hyers stability theorem for the cubic functional equation f (2x + y) + f (2x - y) - 2 f (x + y) - 2 f (x - y) - 12 f (x) = 0 in restricted domains. As an application we consider a measure zero stability problem of the inequality ∥ f (2x + y) + f (2x - y) - 2 f (x + y) - 2 f (x - y) - 12 f (x) ∥ ≤ ∈ for all (x, y) in Γ R2 of Lebesgue measure 0. © 2016 Canadian Mathematical Society." }