Stability of an additive-quadratic functional equation in modular spaces
Using the direct method, we prove the Hyers-Ulam-Rassias stability of the following functional equation: ϕ(x+y,z+w)+ϕ(x−y,z−w)−2ϕ(x,z)−2ϕ(x,w)=0\phi \left(x+y,z+w)+\phi \left(x-y,z-w)-2\phi \left(x,z)-2\phi \left(x,w)=0 in ρ\rho -complete convex modular spaces satisfying Fatou property or Δ2{\Delta...
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          | Main Authors: | , , , | 
|---|---|
| Format: | Article | 
| Language: | English | 
| Published: | De Gruyter
    
        2024-11-01 | 
| Series: | Open Mathematics | 
| Subjects: | |
| Online Access: | https://doi.org/10.1515/math-2024-0075 | 
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