## Found 41 Documents (Results 1–41)

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### The stability of a general sextic functional equation by fixed point theory. (English)Zbl 1457.39018

MSC:  39B82 47H10
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MSC:  39B82 39B52 54E52
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### Ulam-Hyers stability of functional equations in quasi-$$\beta$$-Banach spaces. (English)Zbl 1447.39024

Brzdęk, Janusz (ed.) et al., Ulam type stability. Based on the conferences on Ulam type stability (CUTS), Cluj-Napoca, Romania, July 4–9, 2016 and Timisoara, Romania, October 8–13, 2018. Cham: Springer, 97-130 (2019).
MSC:  39B82 39B52
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### On hyperstability of the two-variable Jensen functional equation on restricted domain. (English)Zbl 1442.39034

Rassias, Themistocles M. (ed.) et al., Mathematical analysis and applications. Cham: Springer. Springer Optim. Appl. 154, 165-183 (2019).
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### Stability and non-stability of generalized radical cubic functional equation in quasi-$$\beta$$-Banach spaces. (English)Zbl 1434.39021

MSC:  39B52 39B82 46L05
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MSC:  39B82
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### The generalized hyperstability of general linear equations in quasi-Banach spaces. (English)Zbl 1391.39033

MSC:  39B82 39B52 47H10
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### Stability of a monomial functional equation on a restricted domain. (English)Zbl 1391.39036

MSC:  39B82 39B52
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### Stability of a monomial functional equation on restricted domains of Lebesgue measure zero. (English)Zbl 1385.39006

MSC:  39B82 39B52
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### Generalized hyperstability of a Drygas functional equation on a restricted domain using Brzdȩk’s fixed point theorem. (English)Zbl 1383.39026

MSC:  39B82 39B62 47H10
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### On a new type of hyperstability for radical cubic functional equation in non-Archimedean metric spaces. (English)Zbl 1371.39036

Result. Math. 72, No. 1-2, 991-1005 (2017); erratum ibid. 72, No. 4, 2271 (2017).
MSC:  39B82 39B62 47H10
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### Approximate solution of radical quartic functional equation related to additive mapping in 2-Banach spaces. (English)Zbl 1370.39011

MSC:  39B52 39B82
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### On Hyers-Ulam stability of generalized linear functional equation and its induced Hyers-Ulam programming problem. (English)Zbl 1341.39018

MSC:  39B82 39B62 39B52
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### A general theorem on the stability of a class of functional equations including monomial equations. (English)Zbl 1335.39035

MSC:  39B82 39B52
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### On hyperstability of generalised linear functional equations in several variables. (English)Zbl 1330.39032

MSC:  39B82 39B52 39B62
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### Recent developments of the conditional stability of the homomorphism equation. (English)Zbl 1312.39031

MSC:  39B82 39B55
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### A general uniqueness theorem concerning the stability of monomial functional equations in fuzzy spaces. (English)Zbl 1311.39048

MSC:  39B82 39B52 46S40
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MSC:  39B82
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MSC:  39B82
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### Hyperstability and superstability. (English)Zbl 1293.39013

MSC:  39B82 39-02
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### Hyperstability of the Fréchet equation and a characterization of inner product spaces. (English)Zbl 1287.39017

MSC:  39B82 39B52 46C15
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### Additive and quadratic type functional equation and its fuzzy stability. (English)Zbl 1268.39028

MSC:  39B82 46S40 39B52
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### Fuzzy stability of an $$n$$-dimensional quadratic and additive functional equation. (English)Zbl 1246.39027

MSC:  39B82 46S40 39B72
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MSC:  39B82
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MSC:  39B82
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### A fixed point approach to the stability of an $$n$$-dimensional mixed-type additive and quadratic functional equation. (English)Zbl 1235.39025

MSC:  39B82 47H10
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### Fuzzy stability of a mixed type functional equation. (English)Zbl 1272.39017

MSC:  39B82 39B52 46S40
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### Fuzzy stability of a general quadratic functional equation. (English)Zbl 1320.39034

MSC:  39B82 39B52 46S40
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### A fixed point approach to the stability of the Cauchy additive and quadratic type functional equation. (English)Zbl 1303.39017

MSC:  39B82 39B52
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MSC:  39B82 39B22 26E50
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### Fuzzy stability of a functional equation deriving from quadratic and additive mappings. (English)Zbl 1221.39037

MSC:  39B82 39B72
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