Stability of a generalized Drygas functional equation via Brzdek's fixed point method

Dehghanian, Mehdi; Park, Choonkil; Sayyari, Yamin

doi:10.1007/s13370-025-01246-4

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Stability of a generalized Drygas functional equation via Brzdek's fixed point method

Dehghanian, Mehdi;
Park, Choonkil;
Sayyari, Yamin

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초록

Using the Brzdek fixed point theorem, we establish the Hyers-Ulam stability of the following generalized Drygas functional equation F(x+sigma(y))+F(x+tau(y))=2F(x)+F(sigma(y))+F(tau(y))}for all x,y is an element of X, where sigma,tau:X -> X are additive isometries.

키워드

Brzdek fixed point theorem; Drygas functional equation; Hyers-Ulam stability; ULAM STABILITY; SUPERSTABILITY; HYERS

제목: Stability of a generalized Drygas functional equation via Brzdek's fixed point method

저자: Dehghanian, Mehdi; Park, Choonkil; Sayyari, Yamin

DOI: 10.1007/s13370-025-01246-4

발행일: 2025-03

유형: Article

저널명: Afrika Matematika

권: 36

호: 1

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