Advances in Fuzzy Systems (Jan 2011)

Fuzzy Stability of a General Quadratic Functional Equation

  • Sun Sook Jin,
  • Yang-Hi Lee

DOI
https://doi.org/10.1155/2011/791695
Journal volume & issue
Vol. 2011

Abstract

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We investigate a fuzzy version of stability for the functional equation 𝑓(𝑥+𝑦+𝑧)+𝑓(𝑥−𝑦)+𝑓(𝑥−𝑧)−𝑓(𝑥−𝑦−𝑧)−𝑓(𝑥+𝑦)−𝑓(𝑥+𝑧)=0 in the sense of M. Mirmostafaee and M. S. Moslehian.