## Found 97 Documents (Results 1–97)

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### Hyers-Ulam stability of functional equation deriving from quadratic mapping in non-Archimedean $$(n,\beta)$$-normed spaces. (English)Zbl 1466.39018

MSC:  39B82 39B52 46S10
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### Orthogonal stability and nonstability of a generalized quartic functional equation in quasi-$$\beta$$-normed spaces. (English)Zbl 1464.39025

MSC:  39B82 39B52 39B55
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### Approximation of functional equations in intuitionistic fuzzy $$C^\ast$$-algebras. (English)Zbl 07623591

MSC:  39-XX 47-XX
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### Hyers-Ulam-Rassias stability of $$(m, n)$$-Jordan derivations. (English)Zbl 1485.16038

MSC:  16W25 39B62 47B47
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### Approximation of the Jensen type rational functional equation by a fixed point technique. (English)Zbl 1431.39015

MSC:  39B82 39B72
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### Fundamental stabilities of various forms of complex valued functional equations. (English)Zbl 1423.39037

Dutta, Hemen (ed.) et al., Applied mathematical analysis: theory, methods, and applications. Cham: Springer. Stud. Syst. Decis. Control 177, 29-59 (2020).
MSC:  39B82 39B72
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### Stability of an $$n$$-dimensional functional equation in Banach space and fuzzy normed space. (English)Zbl 1452.39007

Anastassiou, George A. (ed.) et al., Frontiers in functional equations and analytic inequalities. Cham: Springer. 159-181 (2019).
MSC:  39B52 39B82 54A40
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### Stability of a quartic functional equation. (English)Zbl 1409.39018

MSC:  39B82 39B52 39B72
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### Stability of general $$A$$-cubic functional equations in modular spaces. (English)Zbl 1390.39086

MSC:  39B52 39B72 47H09
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### Solution and stability of a mixed type functional equation. (English)Zbl 1488.39072

MSC:  39B82 39B22
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### Approximation of general $$\alpha$$-cubic functional equations in 2-Banach spaces. (English)Zbl 1490.39038

Ukr. Math. J. 68, No. 10, 1651-1658 (2017) and from Ukr. Mat. Zh. 68, No. 10, 1430-1436 (2016).
MSC:  39B82 46J40
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### Stability of an $$m$$th root functional equation in $$C^{*}$$-algebras: a fixed point approach. (English)Zbl 1383.39029

MSC:  39B82 46L05 39B52
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### Fixed point method for set-valued functional equations. (English)Zbl 1490.39035

MSC:  39B52 39B82 47H04
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### A fixed point approach to Ulam-Hyers stability of duodecic functional equation in quasi-$$\beta$$-normed spaces. (English)Zbl 1377.39044

MSC:  39B82 39B52
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### Ulam-Hyers stability of undecic functional equation in quasi-$$\beta$$-normed spaces: fixed point method. (English)Zbl 1352.39024

MSC:  39B82 39B72
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### Ulam-Hyers stabilities of a generalized composite functional equation in non-Archimedean spaces. (English)Zbl 1350.39016

MSC:  39B82 39B52 46S10
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### On the stability of a $$k$$-cubic functional equation in intuitionistic fuzzy $$n$$-normed spaces. (English)Zbl 1360.39022

MSC:  39B82 46S40
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### Stability of $$n$$-dimensional additive functional equation in generalized 2-normed space. (English)Zbl 1346.39027

MSC:  39B52 39B82
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### Approximation on the reciprocal functional equation in several variables in matrix non-Archimedean random normed spaces. (English)Zbl 1422.39057

Adv. Difference Equ. 2015, Paper No. 314, 13 p. (2015); erratum ibid. 2016, Paper No. 49, 1 p. (2016).
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### Mixed type of additive and quintic functional equations. (English)Zbl 1369.39027

MSC:  39B55 39B82
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MSC:  39B82
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### A fixed point approach to the stability of an AQ-functional equation on $$\beta$$-Banach modules. (English)Zbl 1276.39022

MSC:  39B82 39B52 46H25
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### Retracted: Approximation of Jordan homomorphisms in Jordan-Banach algebras. (English)Zbl 1271.39024

Math. Sci., Springer 6, Paper No. 55, 5 p. (2012); retraction ibid. 9, No. 1, 57 (2015).
MSC:  39B82 39B52
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### Generalized Hyers-Ulam stability of a general mixed additive-cubic functional equation in quasi-Banach spaces. (English)Zbl 1258.39016

MSC:  39B82 39B52
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### On the stability problem in fuzzy Banach space. (English)Zbl 1246.39022

MSC:  39B82 46S40
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### Nearly radical quadratic functional equations in $$p-2$$-normed spaces. (English)Zbl 1237.39032

MSC:  39B82 46B99
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### Approximate $$n$$-Lie homomorphisms and Jordan $$n$$-Lie homomorphisms on $$n$$-Lie algebras. (English)Zbl 1247.39029

MSC:  39B82 39B52 17A42
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MSC:  39B82
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### Generalized Ulam-Hyers stability of random homomorphisms in random normed algebras associated with the Cauchy functional equation. (English)Zbl 1238.39012

MSC:  39B82 39B52 46S50
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### Lattictic non-Archimedean random stability of ACQ functional equation. (English)Zbl 1273.39024

MSC:  39B82 46S50 46S40
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### Stability and superstability of generalized $$(\theta, \phi)$$-derivations in non-Archimedean algebras: fixed point theorem via the additive Cauchy functional equation. (English)Zbl 1238.39011

MSC:  39B82 39B52 47B47
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### Fuzzy stability of quadratic-cubic functional equations. (English)Zbl 1236.39037

MSC:  39B82 39B52 46S40
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### Fixed points and random stability of a generalized Apollonius type quadratic functional equation. (English)Zbl 1216.39038

MSC:  39B82 39B52 46B09
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### On approximate $$C^*$$-ternary $$m$$-homomorphisms: a fixed point approach. (English)Zbl 1216.39036

MSC:  39B82 39B52
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### Stability and superstability of ring homomorphisms on non-archimedean Banach algebras. (English)Zbl 1216.39035

MSC:  39B82 39B52 46S10
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MSC:  39B82
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### Stability of a composite functional equation related to idempotent mappings. (English)Zbl 1211.39019

MSC:  39B82 39B12 39B52
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### Stability of functional equations on restricted domains in a group and their asymptotic behaviors. (English)Zbl 1205.39022

MSC:  39B52 39B82
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### AQCQ-functional equation in non-Archimedean normed spaces. (English)Zbl 1207.39041

MSC:  39B82 39B52 46S10
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### Nearly ring homomorphisms and nearly ring derivations on non-Archimedean Banach algebras. (English)Zbl 1218.46050

MSC:  46S10 39B82
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MSC:  39A30
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MSC:  39B82
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### Random stability of an additive-quadratic-quartic functional equation. (English)Zbl 1187.39045

MSC:  39B82 39B52
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### Stability of quadratic functional equations via the fixed point and direct method. (English)Zbl 1189.39033

MSC:  39B82 39B52
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### Fuzzy stability of an additive-quadratic-quartic functional equation. (English)Zbl 1187.39048

MSC:  39B82 39B52
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### Stability of approximate quadratic mappings. (English)Zbl 1187.39041

MSC:  39B82 39B52
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### A fixed point approach to the fuzzy stability of an additive-quadratic-cubic functional equation. (English)Zbl 1187.39049

MSC:  39B82 39B52
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### The stability of a quadratic functional equation with the fixed point alternative. (English)Zbl 1189.39031

MSC:  39B82 39B52
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### Solution and stability of a mixed type additive, quadratic, and cubic functional equation. (English)Zbl 1177.39031

MSC:  39B82 39B52
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### Stability of a generalized Euler-Lagrange type additive mapping and homomorphisms in $$C^{\ast}$$-algebras. (English)Zbl 1177.39038

MSC:  39B82 39B52 46L05
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### Solution and stability of a mixed type cubic and quartic functional equation in quasi-Banach spaces. (English)Zbl 1177.39034

MSC:  39B82 39B52 46B99
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### Stability of the Jensen-type functional equation in $$C^{\ast}$$-algebras: a fixed point approach. (English)Zbl 1167.39020

MSC:  39B82 39B52 46L57
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### Fuzzy stability of Jensen-type quadratic functional equations. (English)Zbl 1167.39015

MSC:  39B82 39B52 26E50
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### On the generalized Hyers-Ulam-Rassias stability of quadratic functional equations. (English)Zbl 1167.39014

MSC:  39B82 39B22
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### Fixed points and stability of the Cauchy functional equation in $$C^{\ast }$$-algebras. (English)Zbl 1167.39019

MSC:  39B82 39B52 46L57
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### Fixed points and stability of a generalized quadratic functional equation. (English)Zbl 1157.39318

MSC:  39B82 47H10 39B52
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### A functional equation of Aczél and Chung in generalized functions. (English)Zbl 1157.39316

MSC:  39B52 46F10
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### Stability of a functional equation deriving from cubic and quartic functions. (English)Zbl 1160.39334

MSC:  39B82 39B22
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### Stability of an Euler-Lagrange-Rassias equation in the spaces of generalized functions. (English)Zbl 1152.39318

MSC:  39B52 39B82
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### Fixed points and stability of an additive functional equation of $$n$$-Apollonius type in $$C^{\ast}$$-algebras. (English)Zbl 1159.47032

MSC:  47H10 46H99
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### Functional inequalities associated with additive mappings. (English)Zbl 1161.26012

MSC:  26D15 47H14
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### On the stability of quadratic functional equations. (English)Zbl 1146.39045

MSC:  39B82 39B52
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### Hyers-Ulam-Rassias stability of homomorphisms in quasi-Banach algebras. (English)Zbl 1140.39016

MSC:  39B82 46B03 39B52
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### On the stability of a quartic functional equation. (English)Zbl 1133.39030

MSC:  39B82 39B52
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### Stability of an alternative functional equation. (English)Zbl 1133.39025

MSC:  39B82 39B52 39B55
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### Hyers-Ulam-Rassias and Ulam-Gavruta-Rassias stabilities of an additive functional equation in several variables. (English)Zbl 1148.39027

MSC:  39B82 39B52
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### On the generalized Ulam-Gavruta-Rassias stability of mixed-type linear and Euler-Lagrange-Rassias functional equations. (English)Zbl 1148.39026

MSC:  39B82 39B52
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### Fixed points and Hyers–Ulam–Rassias stability of Cauchy–Jensen functional equations in Banach algebras. (English)Zbl 1167.39018

MSC:  39B82 39B52
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### Isomorphisms and derivations in Lie $$C^{\ast}$$-algebras. (English)Zbl 1161.46044

MSC:  46L99 39B82 17B40
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### Hyers-Ulam-Rassias stability of homomorphisms in quasi-Banach algebras associated to the Pexiderized Cauchy functional equation. (English)Zbl 1123.39023

MSC:  39B82 39B52
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MSC:  39B82
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### Asymptotic behavior of alternative Jensen and Jensen type functional equations. (English)Zbl 1081.39028

MSC:  39B82 39B52 39B72
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### On the Ulam stability of Jensen and Jensen type mappings on restricted domains. (English)Zbl 1028.39011

MSC:  39B82 39B52
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### On the Ulam stability of mixed type mappings on restricted domains. (English)Zbl 1021.39015

Reviewer: J.Schwaiger (Graz)
MSC:  39B82 39B52 47H99
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### Solution of the Ulam stability problem for Euler-Lagrange quadratic mappings. (English)Zbl 0928.39014

Reviewer: M.C.Zdun (Kraków)
MSC:  39B82 39B72 39B52
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