In this paper, we establish the Hyers-Ulam stability of the orthogonal quadratic functional equation of Pexiderized type f(x + y) + f(x - y) = 2g(x) + 2h(y), x⊥y in which ⊥ is the orthogonality in the sense of Rätz in modular spaces.
Hsiao, S. W. (2013). PasDroid: 在Android系統上即時防堵惡意軟體的保護方案 [master's thesis, National Taiwan University]. Airiti Library. https://doi.org/10.6342/NTU.2013.03128