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Author ID: brzdek.janusz Recent zbMATH articles by "Brzdęk, Janusz"
Published as: Brzdȩk, Janusz; Brzdęk, Janusz; Brzdȩk, J.; Brzdek, Janusz; Brzdęk, J.; Brzd{e}k, J.
Homepage: http://matematyka.up.krakow.pl/pracow.php?ac=7374149
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Serials

22 Aequationes Mathematicae
12 Journal of Mathematical Analysis and Applications
8 Publicationes Mathematicae Debrecen
7 Bulletin of the Australian Mathematical Society
7 Acta Mathematica Hungarica
6 Journal of Fixed Point Theory and Applications
5 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods
5 Abstract and Applied Analysis
4 Results in Mathematics
4 Glasnik Matematički. Serija III
4 Journal of Function Spaces
3 Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg
3 Applied Mathematics and Computation
3 Archiv der Mathematik
3 Demonstratio Mathematica
2 Annales Polonici Mathematici
2 Pacific Journal of Mathematics
2 Applied Mathematics Letters
2 Discrete Dynamics in Nature and Society
2 Acta Mathematica Scientia. Series B. (English Edition)
2 Journal of Function Spaces and Applications
2 Fixed Point Theory
2 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM
2 Springer Optimization and Its Applications
1 Computers & Mathematics with Applications
1 Zeszyty Naukowe Politechniki Śląskiej. Matematyka-Fizyka
1 Archivum Mathematicum
1 Manuscripta Mathematica
1 Proceedings of the American Mathematical Society
1 Semigroup Forum
1 Annales Universitatis Scientiarum Budapestinensis de Rolando Eötvös Nominatae. Sectio Computatorica
1 Prace Naukowe Uniwersytetu Śląskiego w Katowicach. Annales Mathematicae Silesianae
1 SIAM Review
1 Expositiones Mathematicae
1 Zeszyty Naukowe Akademii Górniczo-Hutniczej Im. Stanisława Staszica. Opuscula Mathematica
1 Filomat
1 Anzeiger. Abteilung II. Österreichische Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Klasse
1 Journal of Difference Equations and Applications
1 Journal of Inequalities and Applications
1 Nonlinear Analysis. Real World Applications
1 Fixed Point Theory and Applications
1 Advances in Difference Equations
1 The Australian Journal of Mathematical Analysis and Applications
1 Carpathian Journal of Mathematics
1 Banach Center Publications
1 Banach Journal of Mathematical Analysis
1 Advances in the Theory of Nonlinear Analysis and its Applications
1 Mathematical Analysis and its Applications

Publications by Year

Citations contained in zbMATH Open

131 Publications have been cited 2,144 times in 701 Documents Cited by Year
On some recent developments in Ulam’s type stability. Zbl 1259.39019
Brillouët-Belluot, Nicole; Brzdȩk, Janusz; Ciepliński, Krzysztof
138
2012
A fixed point approach to stability of functional equations. Zbl 1236.39022
Brzdęk, Janusz; Chudziak, Jacek; Páles, Zsolt
131
2011
Hyperstability of the Cauchy equation on restricted domains. Zbl 1313.39037
Brzdęk, Janusz
108
2013
A fixed point approach to the stability of functional equations in non-Archimedean metric spaces. Zbl 1237.39022
Brzdȩk, Janusz; Ciepliński, Krzysztof
107
2011
Ulam stability of operators. Zbl 1393.39001
Brzdęk, Janusz; Popa, Dorian; Raşa, Ioan; Xu, Bing
107
2018
Hyperstability and superstability. Zbl 1293.39013
Brzdȩk, Janusz; Ciepliński, Krzysztof
91
2013
Recent developments of the conditional stability of the homomorphism equation. Zbl 1312.39031
Brzdęk, Janusz; Fechner, Włodzimierz; Moslehian, Mohammad Sal; Sikorska, Justyna
61
2015
Fixed point theory and the Ulam stability. Zbl 1314.39029
Brzdȩk, Janusz; Cădariu, Liviu; Ciepliński, Krzysztof
60
2014
A hyperstability result for the Cauchy equation. Zbl 1290.39016
Brzdęk, Janusz
55
2014
Remarks on hyperstability of the Cauchy functional equation. Zbl 1303.39016
Brzdȩk, Janusz
52
2013
On a method of proving the Hyers-Ulam stability of functional equations on restricted domains. Zbl 1175.39014
Brzdȩk, Janusz
45
2009
Stability of additivity and fixed point methods. Zbl 1297.39026
Brzdęk, Janusz
42
2013
The Gołąb-Schinzel equation and its generalizations. Zbl 1078.39021
Brzdȩk, Janusz
40
2005
The Hyers-Ulam stability of nonlinear recurrences. Zbl 1123.39022
Brzdȩk, Janusz; Popa, Dorian; Xu, Bing
37
2007
Note on nonstability of the linear recurrence. Zbl 1126.39019
Brzdęk, J.; Popa, D.; Xu, B.
35
2006
Remarks on stability of linear recurrence of higher order. Zbl 1206.39019
Brzdęk, Janusz; Popa, Dorian; Xu, Bing
33
2010
On the quotient stability of a family of functional equations. Zbl 1172.39032
Brzdęk, Janusz
32
2009
On Ulam’s type stability of the linear equation and related issues. Zbl 1419.39053
Brzdęk, Janusz; Ciepliński, Krzysztof; Leśniak, Zbigniew
32
2014
Stability of the equation of the \(p\)-Wright affine functions. Zbl 1272.39015
Brzdęk, Janusz
30
2013
On nonstability of the linear recurrence of order one. Zbl 1193.39006
Brzdȩk, Janusz; Popa, Dorian; Xu, Bing
28
2010
Remarks on stability of some inhomogeneous functional equations. Zbl 1316.39011
Brzdęk, Janusz
28
2015
Hyers-Ulam stability for linear equations of higher orders. Zbl 1174.39012
Brzdȩk, J.; Popa, D.; Xu, B.
26
2008
A conditional exponential functional equation and its stability. Zbl 1187.39032
Brzdȩk, Janusz; Sikorska, Justyna
26
2010
A note on stability of the general linear equation. Zbl 1149.39018
Brzdȩk, Janusz; Pietrzyk, Andrzej
25
2008
On a fixed point theorem in 2-Banach spaces and some of its applications. Zbl 1399.39063
Brzdȩk, Janusz; Ciepliński, Krzysztof
24
2018
Subgroups of the group \(Z_ n\) and a generalization of the Gołąb- Schinzel functional equation. Zbl 0757.39003
Brzdȩk, Janusz
23
1992
Fixed-point results and the Hyers-Ulam stability of linear equations of higher orders. Zbl 1319.39018
Xu, Bing; Brzdęk, Janusz; Zhang, Weinian
22
2015
A note on stability of additive mappings. Zbl 0844.39012
Brzdȩk, Janusz
21
1994
On solutions of the d’Alembert equation on a restricted domain. Zbl 1277.39036
Bahyrycz, Anna; Brzdȩk, Janusz
21
2013
A note on stability of an operator linear equation of the second order. Zbl 1273.39023
Brzdȩk, Janusz; Jung, Soon-Mo
21
2011
Remarks on solutions to the functional equations of the radical type. Zbl 1412.39024
Brzdȩk, Janusz
20
2017
Hyers-Ulam stability with respect to gauges. Zbl 1404.34016
Brzdęk, Janusz; Popa, Dorian; Raşa, Ioan
19
2017
A fixed point theorem in \(n\)-Banach spaces and Ulam stability. Zbl 1441.39025
Brzdęk, Janusz; Ciepliński, Krzysztof
19
2019
A fixed point theorem and the Ulam stability in generalized dq-metric spaces. Zbl 1402.54037
Brzdęk, Janusz; Karapınar, Erdal; Petruşel, Adrian
19
2018
Selections of set-valued maps satisfying a linear inclusion in a single variable. Zbl 1205.39025
Brzdȩk, Janusz; Popa, Dorian; Xu, Bing
18
2011
On approximate solutions of some difference equations. Zbl 1379.39003
Brzdęk, Janusz; Wójcik, Paweł
18
2017
On approximate solutions of some delayed fractional differential equations. Zbl 1381.34103
Brzdȩk, Janusz; Eghbali, Nasrin
18
2016
On approximately \(p\)-Wright affine functions in ultrametric spaces. Zbl 1287.39016
Bahyrycz, Anna; Brzdȩk, Janusz; Piszczek, Magdalena
17
2013
On approximate solutions of the linear functional equation of higher order. Zbl 1204.65147
Brzdȩk, Janusz; Popa, Dorian; Xu, Bing
16
2011
Hyers-Ulam stability of a system of first order linear recurrences with constant coefficients. Zbl 1418.39027
Xu, Bing; Brzdęk, Janusz
16
2015
A note on stability of a linear functional equation of second order connected with the Fibonacci numbers and Lucas sequences. Zbl 1198.39036
Brzdȩk, Janusz; Jung, Soon-Mo
15
2010
Remarks on the stability of Lie homomorphisms. Zbl 1280.39016
Brzdȩk, Janusz; Fošner, Ajda
14
2013
Hyperstability of the Fréchet equation and a characterization of inner product spaces. Zbl 1287.39017
Bahyrycz, Anna; Brzdȩk, Janusz; Piszczek, Magdalena; Sikorska, Justyna
14
2013
A fixed point theorem and the Hyers-Ulam stability in non-Archimedean spaces. Zbl 1286.47049
Brzdȩk, Janusz; Ciepliński, Krzysztof
13
2013
Hyers-Ulam stability of the delay equation \(y'(t)=\lambda y(t-\tau )\). Zbl 1210.34108
Jung, Soon-Mo; Brzdȩk, Janusz
13
2010
On a conditional Gołab-Schinzel equation. Zbl 1075.39028
Brzdek, Janusz; Mureńko, Anna
12
2005
On stability of a family of functional equations. Zbl 1274.39052
Brzdȩk, J.
11
2010
On hyperstability of the biadditive functional equation. Zbl 1399.39066
El-Fassi, Iz-Iddine; Brzdek, Janusz; Chahbi, Abdellatif; Kabbaj, Samir
11
2017
Bounded solutions of the Gołab-Schinzel equation. Zbl 0961.39011
Brzdȩk, Janusz
10
2000
A generalization of addition formulae. Zbl 1050.39031
Brzdȩk, J.
10
2003
Some remarks on solutions of the functional equation \(f(x+f(x)^ ny)=tf(x)f(y)\). Zbl 0808.39013
Brzdȩk, Janusz
10
1993
Ulam’s stability of a generalization of the Fréchet functional equation. Zbl 1339.39023
Bahyrycz, Anna; Brzdęk, Janusz; Jabłońska, Eliza; Malejki, Renata
10
2016
Remarks on the Hyers-Ulam stability of some systems of functional equations. Zbl 1311.39039
Brzdęk, Janusz; Ciepliński, Krzysztof
10
2012
Functional equations in mathematical analysis. Dedicated to the memory of Stanisław Marcin Ulam on the occasion of the 100th anniversary of his birth. Zbl 1225.39001
9
2011
The Christensen measurable solutions of a generalization of the Gołąb-Schinzel functional equation. Zbl 0860.39034
Brzdȩk, Janusz
8
1996
On orthogonally exponential and orthogonally additive mappings. Zbl 0870.39011
Brzdek, Janusz
8
1997
On continuous solutions and stability of a conditional Gołąb-Schinzel equation. Zbl 1174.39011
Brillouët-Belluot, Nicole; Brzdȩk, Janusz
8
2008
The Cauchy and Jensen differences on semigroups. Zbl 0862.39011
Brzdȩk, Janusz
7
1996
On functionals which are orthogonally additive modulo \(\mathbb{Z}\). Zbl 0862.39012
Brzdȩk, Janusz
7
1996
On orthogonally exponential functionals. Zbl 1010.39011
Brzdȩk, Janusz
7
1997
A remark on solutions of a generalization of the addition formulae. Zbl 1094.39020
Brzdȩk, Janusz
7
2006
A note on a fixed point theorem and the Hyers-Ulam stability. Zbl 1254.39012
Badora, Roman; Brzdȩk, Janusz
7
2012
On continuous solutions of a class of conditional equations. Zbl 1212.39031
Brillouët-Belluot, Nicole; Brzdȩk, Janusz; Chudziak, Jacek
7
2009
On approximately additive functions. Zbl 1235.39017
Brzdȩk, Janusz
7
2011
On the isosceles orthogonally exponential mappings. Zbl 0963.46015
Brzdȩk, J.
7
2000
Two general theorems on superstability of functional equations. Zbl 1322.39011
Brzdȩk, Janusz; Najdecki, Adam; Xu, Bing
7
2015
A fixed point theorem and the Hyers-Ulam stability in Riesz spaces. Zbl 1391.39031
Batko, Bogdan; Brzdęk, Janusz
7
2013
Fixed points of a mapping and Hyers-Ulam stability. Zbl 1311.39035
Badora, Roman; Brzdȩk, Janusz
7
2014
On continuous solutions of a conditional Gołąb-Schinzel equation. Zbl 1045.39016
Brzdȩk, J.
6
2001
On approximate solutions of the generalized Volterra integral equation. Zbl 1295.45008
Bahyrycz, Anna; Brzdȩk, Janusz; Leśniak, Zbigniew
6
2014
A note on stability of the Popoviciu functional equation on restricted domain. Zbl 1221.39035
Brzdęk, Janusz
6
2010
On the continuous solutions of a generalization of the Gołąb-Schnizel equation. Zbl 1052.39023
Brzdȩk, J.
6
2003
Note on stability of the Cauchy equation - an answer to a problem of Th. M. Rassias. Zbl 1389.39047
Brzdȩk, Janusz
6
2014
On functions that are approximate fixed points almost everywhere and Ulam’s type stability. Zbl 1328.39041
Bahyrycz, Anna; Brzdęk, Janusz; Jabłońska, Eliza; Olko, Jolanta
6
2015
Remarks on solutions to a generalization of the radical functional equations. Zbl 1397.39016
Brzdęk, Janusz; Schwaiger, Jens
6
2018
On solutions of a generalization of the Reynolds functional equation. Zbl 1163.39013
Brzdȩk, Janusz
6
2008
On the Baxter functional equation. Zbl 0857.39011
Brzdȩk, Janusz
5
1996
On the Cauchy difference on normed spaces. Zbl 0864.39009
Brzdȩk, J.
5
1996
A note on stability of polynomial equations. Zbl 1277.39037
Brzdȩk, Janusz; Stević, Stevo
5
2013
On approximately additive mappings in 2-Banach spaces. Zbl 1440.39017
Brzdęk, Janusz; El-Hady, El-Sayed
5
2020
On the structure and solutions of functional equations arising from queueing models. Zbl 1441.39022
El-Hady, El-Sayed; Brzdęk, Janusz; Nassar, Hamed
5
2017
A note on solutions of a functional equation arising in a queuing model for a LAN gateway. Zbl 1345.30030
Brzdęk, Janusz; El-hady, El-sayed; Förg-Rob, Wolfgang; Leśniak, Zbigniew
5
2016
Selections of set-valued maps satisfying some inclusions and the Hyers-Ulam stability. Zbl 1311.39038
Brzdȩk, Janusz; Piszczek, Magdalena
5
2014
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. Zbl 1431.39001
5
2019
On a generalization of the Cauchy functional equation. Zbl 0788.39004
Brzdȩk, Janusz
4
1993
On the solutions of the functional equation \(f(xf(y)^ l + yf(x)^ k) = tf(x)f(y)\). Zbl 0741.39008
Brzdȩk, Janusz
4
1991
On functions satisfying some inequalities. Zbl 0815.39011
Brzdȩk, J.
4
1993
Note on nonstability of the linear functional equation of higher order. Zbl 1231.39012
Brzdek, Janusz; Popa, Dorian; Xu, Bing
4
2011
Survey on recent Ulam stability results concerning derivations. Zbl 1347.39025
Brzdęk, Janusz; Cădariu, Liviu; Ciepliński, Krzysztof; Fošner, Ajda; Leśniak, Zbigniew
4
2016
On approximate generalized Lie derivations. Zbl 1321.47088
Brzdęk, Janusz; Fošner, Ajda
4
2015
Remarks on stability and non-stability of the linear functional equation of the first order. Zbl 1334.39057
Brzdȩk, Janusz; Popa, Dorian; Xu, Bing
4
2014
A note on d’Alembert’s functional equation on a restricted domain. Zbl 1305.39016
Bahyrycz, Anna; Brzdȩk, Janusz
4
2014
Fixed points of some nonlinear operators in spaces of multifunctions and the Ulam stability. Zbl 1417.39079
Brzdȩk, Janusz; Piszczek, Magdalena
4
2017
On the Cauchy difference. Zbl 0780.39008
Brzdȩk, Janusz
3
1992
On measurable orthogonally exponential functions. Zbl 0924.39018
Brzdȩk, Janusz
3
1999
On almost additive functions. Zbl 0865.39007
Brzdȩk, Janusz
3
1996
Remarks on stability of the linear functional equation in single variable. Zbl 1248.39022
Brzdȩk, Janusz; Popa, Dorian; Xu, Bing
3
2012
Generalizations of some results concerning microperiodic mappings. Zbl 1194.39021
Brzdęk, Janusz
3
2006
On solutions of Aczél’s equation and some related equations. Zbl 1215.39023
Brillouët-Belluot, Nicole; Brzdȩk, Janusz; Chudziak, Jacek
3
2010
Remarks on solutions of a functional equation arising from an asymmetric switch. Zbl 1375.39042
El-Hady, El-Sayed; Brzdęk, Janusz; Förg-Rob, Wolfgang; Nassar, Hamed
3
2016
On Ulam stability of a generalized delayed differential equation of fractional order. Zbl 1491.34085
Brzdęk, Janusz; Eghbali, Nasrin; Kalvandi, Vida
2
2022
Comments on fixed point results in classes of function with values in a \(b\)-metric space. Zbl 1478.54050
Brzdęk, Janusz
1
2022
Banach limit in the stability problem of a linear functional equation. Zbl 1467.39019
Badora, Roman; Brzdęk, Janusz
3
2021
On approximately additive mappings in 2-Banach spaces. Zbl 1440.39017
Brzdęk, Janusz; El-Hady, El-Sayed
5
2020
Investigations on the Hyers-Ulam stability of generalized radical functional equations. Zbl 1441.39029
Brzdęk, Janusz; El-hady, El-sayed; Schwaiger, Jens
1
2020
A note on asymptotically approximate generalized Lie derivations. Zbl 1441.16042
Brzdęk, Janusz; Fošner, Ajda; Leśniak, Zbigniew
1
2020
A fixed point theorem in \(n\)-Banach spaces and Ulam stability. Zbl 1441.39025
Brzdęk, Janusz; Ciepliński, Krzysztof
19
2019
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. Zbl 1431.39001
5
2019
Ulam stability of operators. Zbl 1393.39001
Brzdęk, Janusz; Popa, Dorian; Raşa, Ioan; Xu, Bing
107
2018
On a fixed point theorem in 2-Banach spaces and some of its applications. Zbl 1399.39063
Brzdȩk, Janusz; Ciepliński, Krzysztof
24
2018
A fixed point theorem and the Ulam stability in generalized dq-metric spaces. Zbl 1402.54037
Brzdęk, Janusz; Karapınar, Erdal; Petruşel, Adrian
19
2018
Remarks on solutions to a generalization of the radical functional equations. Zbl 1397.39016
Brzdęk, Janusz; Schwaiger, Jens
6
2018
On the hyperstability of a pexiderised \(\sigma\)-quadratic functional equation on semigroups. Zbl 1387.39018
El-Fassi, Iz-Iddine; Brzdęk, Janusz
3
2018
On the generalized Fréchet functional equation with constant coefficients and its stability. Zbl 1390.39085
Brzdęk, Janusz; Leśniak, Zbigniew; Malejki, Renata
2
2018
Stability problem for the composite type functional equations. Zbl 1390.39095
Agarwal, Ravi P.; Brzdęk, Janusz; Chudziak, Jacek
1
2018
On fixed points of a linear operator of polynomial form of order 3. Zbl 1479.47042
Brzdȩk, Janusz; El-hady, El-sayed; Leśniak, Zbigniew
1
2018
Remarks on solutions to the functional equations of the radical type. Zbl 1412.39024
Brzdȩk, Janusz
20
2017
Hyers-Ulam stability with respect to gauges. Zbl 1404.34016
Brzdęk, Janusz; Popa, Dorian; Raşa, Ioan
19
2017
On approximate solutions of some difference equations. Zbl 1379.39003
Brzdęk, Janusz; Wójcik, Paweł
18
2017
On hyperstability of the biadditive functional equation. Zbl 1399.39066
El-Fassi, Iz-Iddine; Brzdek, Janusz; Chahbi, Abdellatif; Kabbaj, Samir
11
2017
On the structure and solutions of functional equations arising from queueing models. Zbl 1441.39022
El-Hady, El-Sayed; Brzdęk, Janusz; Nassar, Hamed
5
2017
Fixed points of some nonlinear operators in spaces of multifunctions and the Ulam stability. Zbl 1417.39079
Brzdȩk, Janusz; Piszczek, Magdalena
4
2017
Ulam stability of some functional inclusions for multi-valued mappings. Zbl 1499.39114
Brzdęk, Janusz; Piszczek, Magdalena
3
2017
Developments in functional equations and related topics. Selected papers based on the presentations at the 16th international conference on functional equations and inequalities, ICFEI, Będlewo, Poland, May 17–23, 2015. Zbl 1381.39001
1
2017
On extensions of the generalised Jensen functions on semigroups. Zbl 1368.39018
Brzdęk, Janusz; Jabłońska, Eliza
1
2017
Approximately \(p\)-Wright affine functions, inner product spaces and derivations. Zbl 1362.39033
Bahyrycz, Anna; Brzdęk, Janusz; Piszczek, Magdalena
1
2017
On approximate solutions of some delayed fractional differential equations. Zbl 1381.34103
Brzdȩk, Janusz; Eghbali, Nasrin
18
2016
Ulam’s stability of a generalization of the Fréchet functional equation. Zbl 1339.39023
Bahyrycz, Anna; Brzdęk, Janusz; Jabłońska, Eliza; Malejki, Renata
10
2016
A note on solutions of a functional equation arising in a queuing model for a LAN gateway. Zbl 1345.30030
Brzdęk, Janusz; El-hady, El-sayed; Förg-Rob, Wolfgang; Leśniak, Zbigniew
5
2016
Survey on recent Ulam stability results concerning derivations. Zbl 1347.39025
Brzdęk, Janusz; Cădariu, Liviu; Ciepliński, Krzysztof; Fošner, Ajda; Leśniak, Zbigniew
4
2016
Remarks on solutions of a functional equation arising from an asymmetric switch. Zbl 1375.39042
El-Hady, El-Sayed; Brzdęk, Janusz; Förg-Rob, Wolfgang; Nassar, Hamed
3
2016
On extensions of the generalized cosine functions from some large sets. Zbl 1399.39043
Bahyrycz, A.; Brzdȩk, J.; Jabłońska, E.
3
2016
Stability for a family of equations generalizing the equation of \(p\)-Wright affine functions. Zbl 1410.39044
Brzdęk, Janusz; Cădariu, Liviu
3
2016
On stability of a functional equation of quadratic type. Zbl 1389.39046
Brzd{e}k, J.; Jabłońska, E.; Moslehian, M. S.; Pacho, P.
2
2016
Editorial: Ulam’s type stability and fixed points methods 2016. Zbl 1344.00007
1
2016
Recent developments of the conditional stability of the homomorphism equation. Zbl 1312.39031
Brzdęk, Janusz; Fechner, Włodzimierz; Moslehian, Mohammad Sal; Sikorska, Justyna
61
2015
Remarks on stability of some inhomogeneous functional equations. Zbl 1316.39011
Brzdęk, Janusz
28
2015
Fixed-point results and the Hyers-Ulam stability of linear equations of higher orders. Zbl 1319.39018
Xu, Bing; Brzdęk, Janusz; Zhang, Weinian
22
2015
Hyers-Ulam stability of a system of first order linear recurrences with constant coefficients. Zbl 1418.39027
Xu, Bing; Brzdęk, Janusz
16
2015
Two general theorems on superstability of functional equations. Zbl 1322.39011
Brzdȩk, Janusz; Najdecki, Adam; Xu, Bing
7
2015
On functions that are approximate fixed points almost everywhere and Ulam’s type stability. Zbl 1328.39041
Bahyrycz, Anna; Brzdęk, Janusz; Jabłońska, Eliza; Olko, Jolanta
6
2015
On approximate generalized Lie derivations. Zbl 1321.47088
Brzdęk, Janusz; Fošner, Ajda
4
2015
Fixed point theory and the Ulam stability. Zbl 1314.39029
Brzdȩk, Janusz; Cădariu, Liviu; Ciepliński, Krzysztof
60
2014
A hyperstability result for the Cauchy equation. Zbl 1290.39016
Brzdęk, Janusz
55
2014
On Ulam’s type stability of the linear equation and related issues. Zbl 1419.39053
Brzdęk, Janusz; Ciepliński, Krzysztof; Leśniak, Zbigniew
32
2014
Fixed points of a mapping and Hyers-Ulam stability. Zbl 1311.39035
Badora, Roman; Brzdȩk, Janusz
7
2014
On approximate solutions of the generalized Volterra integral equation. Zbl 1295.45008
Bahyrycz, Anna; Brzdȩk, Janusz; Leśniak, Zbigniew
6
2014
Note on stability of the Cauchy equation - an answer to a problem of Th. M. Rassias. Zbl 1389.39047
Brzdȩk, Janusz
6
2014
Selections of set-valued maps satisfying some inclusions and the Hyers-Ulam stability. Zbl 1311.39038
Brzdȩk, Janusz; Piszczek, Magdalena
5
2014
Remarks on stability and non-stability of the linear functional equation of the first order. Zbl 1334.39057
Brzdȩk, Janusz; Popa, Dorian; Xu, Bing
4
2014
A note on d’Alembert’s functional equation on a restricted domain. Zbl 1305.39016
Bahyrycz, Anna; Brzdȩk, Janusz
4
2014
On stability of the linear and polynomial functional equations in single variable. Zbl 1311.39037
Brzdȩk, Janusz; Piszczek, Magdalena
3
2014
Remarks on stability of the equation of homomorphism for square symmetric groupoids. Zbl 1311.39036
Bahyrycz, Anna; Brzdȩk, Janusz
1
2014
A note on the functions that are approximately \(p\)-Wright affine. Zbl 1319.39016
Brzdȩk, Janusz
1
2014
Hyperstability of the Cauchy equation on restricted domains. Zbl 1313.39037
Brzdęk, Janusz
108
2013
Hyperstability and superstability. Zbl 1293.39013
Brzdȩk, Janusz; Ciepliński, Krzysztof
91
2013
Remarks on hyperstability of the Cauchy functional equation. Zbl 1303.39016
Brzdȩk, Janusz
52
2013
Stability of additivity and fixed point methods. Zbl 1297.39026
Brzdęk, Janusz
42
2013
Stability of the equation of the \(p\)-Wright affine functions. Zbl 1272.39015
Brzdęk, Janusz
30
2013
On solutions of the d’Alembert equation on a restricted domain. Zbl 1277.39036
Bahyrycz, Anna; Brzdȩk, Janusz
21
2013
On approximately \(p\)-Wright affine functions in ultrametric spaces. Zbl 1287.39016
Bahyrycz, Anna; Brzdȩk, Janusz; Piszczek, Magdalena
17
2013
Remarks on the stability of Lie homomorphisms. Zbl 1280.39016
Brzdȩk, Janusz; Fošner, Ajda
14
2013
Hyperstability of the Fréchet equation and a characterization of inner product spaces. Zbl 1287.39017
Bahyrycz, Anna; Brzdȩk, Janusz; Piszczek, Magdalena; Sikorska, Justyna
14
2013
A fixed point theorem and the Hyers-Ulam stability in non-Archimedean spaces. Zbl 1286.47049
Brzdȩk, Janusz; Ciepliński, Krzysztof
13
2013
A fixed point theorem and the Hyers-Ulam stability in Riesz spaces. Zbl 1391.39031
Batko, Bogdan; Brzdęk, Janusz
7
2013
A note on stability of polynomial equations. Zbl 1277.39037
Brzdȩk, Janusz; Stević, Stevo
5
2013
Ulam’s type stability 2013. Zbl 1298.00108
2
2013
Remarks on some systems of two simultaneous functional inequalities. Zbl 1289.39051
Bahyrycz, Anna; Brzdȩk, Janusz
1
2013
On some recent developments in Ulam’s type stability. Zbl 1259.39019
Brillouët-Belluot, Nicole; Brzdȩk, Janusz; Ciepliński, Krzysztof
138
2012
Remarks on the Hyers-Ulam stability of some systems of functional equations. Zbl 1311.39039
Brzdęk, Janusz; Ciepliński, Krzysztof
10
2012
A note on a fixed point theorem and the Hyers-Ulam stability. Zbl 1254.39012
Badora, Roman; Brzdȩk, Janusz
7
2012
Remarks on stability of the linear functional equation in single variable. Zbl 1248.39022
Brzdȩk, Janusz; Popa, Dorian; Xu, Bing
3
2012
A note on stability of the linear functional equations of higher order and fixed points of an operators. Zbl 1282.39026
Brzdȩk, Janusz; Popa, Dorian; Xu, Bing
3
2012
A fixed point approach to stability of functional equations. Zbl 1236.39022
Brzdęk, Janusz; Chudziak, Jacek; Páles, Zsolt
131
2011
A fixed point approach to the stability of functional equations in non-Archimedean metric spaces. Zbl 1237.39022
Brzdȩk, Janusz; Ciepliński, Krzysztof
107
2011
A note on stability of an operator linear equation of the second order. Zbl 1273.39023
Brzdȩk, Janusz; Jung, Soon-Mo
21
2011
Selections of set-valued maps satisfying a linear inclusion in a single variable. Zbl 1205.39025
Brzdȩk, Janusz; Popa, Dorian; Xu, Bing
18
2011
On approximate solutions of the linear functional equation of higher order. Zbl 1204.65147
Brzdȩk, Janusz; Popa, Dorian; Xu, Bing
16
2011
Functional equations in mathematical analysis. Dedicated to the memory of Stanisław Marcin Ulam on the occasion of the 100th anniversary of his birth. Zbl 1225.39001
9
2011
On approximately additive functions. Zbl 1235.39017
Brzdȩk, Janusz
7
2011
Note on nonstability of the linear functional equation of higher order. Zbl 1231.39012
Brzdek, Janusz; Popa, Dorian; Xu, Bing
4
2011
Remarks on stability of linear recurrence of higher order. Zbl 1206.39019
Brzdęk, Janusz; Popa, Dorian; Xu, Bing
33
2010
On nonstability of the linear recurrence of order one. Zbl 1193.39006
Brzdȩk, Janusz; Popa, Dorian; Xu, Bing
28
2010
A conditional exponential functional equation and its stability. Zbl 1187.39032
Brzdȩk, Janusz; Sikorska, Justyna
26
2010
A note on stability of a linear functional equation of second order connected with the Fibonacci numbers and Lucas sequences. Zbl 1198.39036
Brzdȩk, Janusz; Jung, Soon-Mo
15
2010
Hyers-Ulam stability of the delay equation \(y'(t)=\lambda y(t-\tau )\). Zbl 1210.34108
Jung, Soon-Mo; Brzdȩk, Janusz
13
2010
On stability of a family of functional equations. Zbl 1274.39052
Brzdȩk, J.
11
2010
A note on stability of the Popoviciu functional equation on restricted domain. Zbl 1221.39035
Brzdęk, Janusz
6
2010
On solutions of Aczél’s equation and some related equations. Zbl 1215.39023
Brillouët-Belluot, Nicole; Brzdȩk, Janusz; Chudziak, Jacek
3
2010
On a method of proving the Hyers-Ulam stability of functional equations on restricted domains. Zbl 1175.39014
Brzdȩk, Janusz
45
2009
On the quotient stability of a family of functional equations. Zbl 1172.39032
Brzdęk, Janusz
32
2009
On continuous solutions of a class of conditional equations. Zbl 1212.39031
Brillouët-Belluot, Nicole; Brzdȩk, Janusz; Chudziak, Jacek
7
2009
Hyers-Ulam stability for linear equations of higher orders. Zbl 1174.39012
Brzdȩk, J.; Popa, D.; Xu, B.
26
2008
A note on stability of the general linear equation. Zbl 1149.39018
Brzdȩk, Janusz; Pietrzyk, Andrzej
25
2008
On continuous solutions and stability of a conditional Gołąb-Schinzel equation. Zbl 1174.39011
Brillouët-Belluot, Nicole; Brzdȩk, Janusz
8
2008
On solutions of a generalization of the Reynolds functional equation. Zbl 1163.39013
Brzdȩk, Janusz
6
2008
Continuity of measurable homomorphisms. Zbl 1157.22001
Brzdȩk, Janusz
2
2008
The Hyers-Ulam stability of nonlinear recurrences. Zbl 1123.39022
Brzdȩk, Janusz; Popa, Dorian; Xu, Bing
37
2007
On approximately microperiodic mappings. Zbl 1164.39012
Brzdȩk, J.
3
2007
Note on nonstability of the linear recurrence. Zbl 1126.39019
Brzdęk, J.; Popa, D.; Xu, B.
35
2006
...and 31 more Documents
all top 5

Cited by 545 Authors

78 Brzdęk, Janusz
30 El-Fassi, Iz-Iddine
30 Popa, Dorian
27 Jung, Soon-Mo
27 Park, Choonkil
26 Onitsuka, Masakazu
25 Bodaghi, Abasalt
24 Ciepliński, Krzysztof
23 Kabbaj, Samir
22 Rassias, John Michael
21 Rassias, Themistocles Michael
19 Bahyrycz, Anna
18 Chudziak, Jacek
17 Chung, Jaeyoung
17 Khodaei, Hamid
16 Jabłońska, Eliza
15 Almahalebi, Muaadh
15 Zada, Akbar
14 Anderson, Douglas Robert
14 El-hady, El-sayed
12 Ostaszewski, Adam J.
12 Piszczek, Magdalena
12 Xu, Tianzhou
11 Saadati, Reza
10 Olko, Jolanta
10 Rasa, Ioan
10 Sintunavarat, Wutiphol
10 Wang, Jinrong
10 Xu, Bing
9 Aribou, Youssef
9 Lee, Yang-Hi
9 Sikorska, Justyna
8 Choi, Chang-Kwon
8 Eshaghi Gordji, Madjid
8 Leśniak, Zbigniew
8 Rezapour, Shahram
7 Aiemsomboon, Laddawan
7 Dăianu, Dan M.
7 Dragičević, Davor
7 Fošner, Ajda
7 Li, Yongjin
7 O’Regan, Donal
6 Baias, Alina-Ramona
6 Cădariu, Liviu I.
6 Charifi, Ahmed
6 Dimou, Hajira
6 Elqorachi, Elhoucien
6 Karapınar, Erdal
6 Schwaiger, Jens
5 Al-Ali, Sadeq A. A.
5 Batko, Bogdan
5 Bingham, Nicholas Hugh
5 Buşe, Constantin
5 Chahbi, Abdellatif
5 Dong, Yunbai
5 El Ghali, Rachid
5 Hryrou, Mustapha Esseghyr
5 Kang, DongSeung
5 Kaskasem, Prondanai
5 Kim, Hark-Mahn
5 Kumar, D. Ramesh
5 Lungu, Nicolaie
5 Marian, Daniela
5 Najati, Abbas
5 Nam, Young Woo
5 Nuino, Ahmed
5 Oubbi, Lahbib
5 Pitchaimani, M.
5 Rassias, Michael Th.
5 Shah, Kamal
4 Badora, Roman
4 Benzarouala, Chaimaa
4 Bergam, Amal
4 Brillouët-Belluot, Nicole
4 Chandok, Sumit
4 Chang, Ick-Soon
4 Ciplea, Sorina Anamaria
4 Etemad, Sina
4 Hayati, Bahman
4 Kim, Gwang Hui
4 Klin-Eam, Chakkrid
4 Malejki, Renata
4 Mirzaee, Farshid
4 Roh, Jaiok
4 Sayar, Khaled Yahya Naif
4 Sharma, Ravinder Kumar
4 Stević, Stevo
4 Xu, Wanxin
3 Ali, Wajid
3 Ali, Zeeshan
3 Alzabut, Jehad O.
3 Backes, Lucas H.
3 Başcı, Yasemin
3 Ben Makhlouf, Abdellatif
3 Bouikhalene, Belaid
3 Cho, Yeol Je
3 de la Sen, Manuel
3 Dehghanian, Mehdi
3 Ding, Yali
3 Dutta, Hemen
...and 445 more Authors
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Cited in 153 Serials

67 Aequationes Mathematicae
44 Journal of Mathematical Analysis and Applications
32 Results in Mathematics
29 Journal of Inequalities and Applications
29 Journal of Fixed Point Theory and Applications
26 Journal of Function Spaces
24 Abstract and Applied Analysis
23 Advances in Difference Equations
20 Acta Mathematica Hungarica
18 Bulletin of the Australian Mathematical Society
17 Applied Mathematics Letters
16 Applied Mathematics and Computation
11 Demonstratio Mathematica
9 Proyecciones
8 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods
8 Journal of Nonlinear Science and Applications
8 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM
7 Filomat
7 Acta Mathematica Scientia. Series B. (English Edition)
6 Discrete Dynamics in Nature and Society
6 Mediterranean Journal of Mathematics
6 Fixed Point Theory and Applications
6 Journal of Linear and Topological Algebra
6 AIMS Mathematics
5 The Journal of Analysis
5 Communications of the Korean Mathematical Society
5 Qualitative Theory of Dynamical Systems
5 Bulletin of the Malaysian Mathematical Sciences Society. Second Series
5 Journal of Mathematical Inequalities
5 Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica
5 Palestine Journal of Mathematics
4 Mathematical Methods in the Applied Sciences
4 Indagationes Mathematicae. New Series
4 Symmetry
4 Mathematics
3 Computers & Mathematics with Applications
3 Journal of Mathematical Physics
3 Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg
3 Bulletin of the Korean Mathematical Society
3 Bulletin des Sciences Mathématiques
3 Nonlinear Functional Analysis and Applications
3 Hacettepe Journal of Mathematics and Statistics
3 Journal of Function Spaces and Applications
3 Asian-European Journal of Mathematics
3 Journal of Classical Analysis
3 Korean Journal of Mathematics
2 Rocky Mountain Journal of Mathematics
2 Archiv der Mathematik
2 Functiones et Approximatio. Commentarii Mathematici
2 Fuzzy Sets and Systems
2 Journal of Approximation Theory
2 Monatshefte für Mathematik
2 Semigroup Forum
2 Journal of Contemporary Mathematical Analysis. Armenian Academy of Sciences
2 Expositiones Mathematicae
2 Journal of Mathematical Sciences (New York)
2 Journal of the Egyptian Mathematical Society
2 Journal of Difference Equations and Applications
2 Journal of Applied Analysis
2 Soft Computing
2 Mathematical Inequalities & Applications
2 Analysis (München)
2 Communications in Nonlinear Science and Numerical Simulation
2 Annales Mathematicae Silesianae
2 Nonlinear Analysis. Modelling and Control
2 Kragujevac Journal of Mathematics
2 Thai Journal of Mathematics
2 Iranian Journal of Fuzzy Systems
2 Mathematical Biosciences and Engineering
2 Boundary Value Problems
2 Banach Journal of Mathematical Analysis
2 Tbilisi Mathematical Journal
2 Differential Equations and Applications
2 Advances in Mathematical Physics
2 International Journal of Nonlinear Analysis and Applications
2 Journal of Applied Mathematics & Informatics
2 Afrika Matematika
2 Axioms
2 Journal of Mathematics
2 Sahand Communications in Mathematical Analysis
2 International Journal of Applied and Computational Mathematics
2 Moroccan Journal of Pure and Applied Analysis
2 Constructive Mathematical Analysis
1 Advances in Applied Probability
1 International Journal of Theoretical Physics
1 Physica A
1 Ukrainian Mathematical Journal
1 Chaos, Solitons and Fractals
1 Acta Mathematica Vietnamica
1 Bulletin of the London Mathematical Society
1 Fundamenta Mathematicae
1 Information Sciences
1 International Journal of Mathematics and Mathematical Sciences
1 Journal of Computational and Applied Mathematics
1 Manuscripta Mathematica
1 Mathematische Annalen
1 Mathematische Nachrichten
1 Mathematica Slovaca
1 Proceedings of the American Mathematical Society
1 Publications de l’Institut Mathématique. Nouvelle Série
...and 53 more Serials
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Cited in 46 Fields

536 Difference and functional equations (39-XX)
178 Operator theory (47-XX)
104 Ordinary differential equations (34-XX)
72 Functional analysis (46-XX)
48 General topology (54-XX)
38 Real functions (26-XX)
20 Integral equations (45-XX)
18 Numerical analysis (65-XX)
17 Partial differential equations (35-XX)
13 Approximations and expansions (41-XX)
12 Dynamical systems and ergodic theory (37-XX)
9 Associative rings and algebras (16-XX)
9 Nonassociative rings and algebras (17-XX)
9 Topological groups, Lie groups (22-XX)
9 Probability theory and stochastic processes (60-XX)
9 Systems theory; control (93-XX)
8 Measure and integration (28-XX)
5 Functions of a complex variable (30-XX)
5 Quantum theory (81-XX)
5 Biology and other natural sciences (92-XX)
4 Mathematical logic and foundations (03-XX)
4 Number theory (11-XX)
4 Special functions (33-XX)
4 Integral transforms, operational calculus (44-XX)
4 Convex and discrete geometry (52-XX)
3 General and overarching topics; collections (00-XX)
3 Field theory and polynomials (12-XX)
3 Group theory and generalizations (20-XX)
3 Abstract harmonic analysis (43-XX)
2 Combinatorics (05-XX)
2 Linear and multilinear algebra; matrix theory (15-XX)
2 Several complex variables and analytic spaces (32-XX)
2 Harmonic analysis on Euclidean spaces (42-XX)
2 Mechanics of particles and systems (70-XX)
2 Game theory, economics, finance, and other social and behavioral sciences (91-XX)
1 History and biography (01-XX)
1 Commutative algebra (13-XX)
1 Category theory; homological algebra (18-XX)
1 Sequences, series, summability (40-XX)
1 Calculus of variations and optimal control; optimization (49-XX)
1 Geometry (51-XX)
1 Algebraic topology (55-XX)
1 Global analysis, analysis on manifolds (58-XX)
1 Statistics (62-XX)
1 Operations research, mathematical programming (90-XX)
1 Information and communication theory, circuits (94-XX)

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