On the Brzdȩk’s fixed point approach to stability of a Drygas functional equation in 2-Banach spaces
Using the Brzḑek’s fixed point approach, we will prove the generalized Hyers–Ulam–Rassias stability for the following Drygas functional equation in 2-Banach spaces f ( x + y ) + f ( x - y ) = 2 f ( x ) + f ( y ) + f ( - y ) . Moreover, we investigate some hyperstability results for this equation....
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| Veröffentlicht in: | Journal of fixed point theory and applications 2021-05, Vol.23 (2), Article 18 |
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| 1. Verfasser: | |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | Using the Brzḑek’s fixed point approach, we will prove the generalized Hyers–Ulam–Rassias stability for the following Drygas functional equation in 2-Banach spaces
f
(
x
+
y
)
+
f
(
x
-
y
)
=
2
f
(
x
)
+
f
(
y
)
+
f
(
-
y
)
.
Moreover, we investigate some hyperstability results for this equation. |
|---|---|
| ISSN: | 1661-7738 1661-7746 |
| DOI: | 10.1007/s11784-021-00856-2 |