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## Park, Choonkil

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 Author ID: park.choonkil Published as: Baak, Choonkil; Park, C.; Park, C. G.; Park, C.-G.; Park, Ch.; Park, Choonkil; Park, Choonkill; Park, Chun Gil; Park, Chun-Gil; Park, Chungil
 Documents Indexed: 501 Publications since 1997, including 1 Book Reviewing Activity: 162 Reviews
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all top 5

#### Serials

 75 Journal of Computational Analysis and Applications 48 Journal of Inequalities and Applications 29 Advances in Difference Equations 21 Journal of Nonlinear Science and Applications 17 Fixed Point Theory and Applications 16 Journal of Mathematical Analysis and Applications 14 Journal of Fixed Point Theory and Applications 12 Abstract and Applied Analysis 11 Bulletin of the Korean Mathematical Society 10 Acta Mathematica Sinica. English Series 10 Journal of Mathematical Inequalities 9 Nonlinear Functional Analysis and Applications 8 Results in Mathematics 8 Taiwanese Journal of Mathematics 8 International Journal of Nonlinear Analysis and Applications 7 International Journal of Geometric Methods in Modern Physics 5 Journal of the Korean Mathematical Society 5 Applied Mathematics Letters 4 Indian Journal of Pure & Applied Mathematics 4 Rocky Mountain Journal of Mathematics 4 Czechoslovak Mathematical Journal 4 Kyungpook Mathematical Journal 4 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 4 Acta Mathematica Scientia. Series B. (English Edition) 4 Bulletin of the Brazilian Mathematical Society. New Series 4 Fixed Point Theory 4 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM 4 Mathematics 4 Open Mathematics 4 Korean Journal of Mathematics 3 Chinese Annals of Mathematics. Series B 3 Mathematical Inequalities & Applications 3 Tamsui Oxford Journal of Mathematical Sciences 3 Communications of the Korean Mathematical Society 3 Mathematical Sciences 2 Communications in Algebra 2 Journal of Mathematical Physics 2 Demonstratio Mathematica 2 Proceedings of the American Mathematical Society 2 Acta Applicandae Mathematicae 2 Bulletin of the Iranian Mathematical Society 2 Proceedings of the Indian Academy of Sciences. Mathematical Sciences 2 Bulletin of the Belgian Mathematical Society - Simon Stevin 2 Filomat 2 Journal of Difference Equations and Applications 2 Scientific Bulletin. Series A. Applied Mathematics and Physics. Politehnica University of Bucharest 2 Vietnam Journal of Mathematics 2 Journal of the Korean Society of Mathematical Education. Series B. The Pure and Applied Mathematics 2 Far East Journal of Mathematical Sciences 2 Dynamics of Continuous, Discrete & Impulsive Systems. Series A. Mathematical Analysis 2 The Australian Journal of Mathematical Analysis and Applications 2 Journal of Applied Functional Analysis 2 Annali dell’Università di Ferrara. Sezione VII. Scienze Matematiche 2 Operators and Matrices 2 Banach Journal of Mathematical Analysis 1 Bulletin of the Australian Mathematical Society 1 Computers & Mathematics with Applications 1 Houston Journal of Mathematics 1 Matimyás Matematika 1 Studia Mathematica 1 Applied Mathematics and Computation 1 Archiv der Mathematik 1 Canadian Mathematical Bulletin 1 Fuzzy Sets and Systems 1 Journal of Computational and Applied Mathematics 1 Mathematische Nachrichten 1 Mathematica Slovaca 1 Numerical Functional Analysis and Optimization 1 Tamkang Journal of Mathematics 1 Soochow Journal of Mathematics 1 Southeast Asian Bulletin of Mathematics 1 Chinese Annals of Mathematics. Series A 1 Mathematical and Computer Modelling 1 Mathematica Bohemica 1 Aequationes Mathematicae 1 Studia Universitatis Babeş-Bolyai. Mathematica 1 New Zealand Journal of Mathematics 1 Bulletin des Sciences Mathématiques 1 Review Bulletin of the Calcutta Mathematical Society 1 Southwest Journal of Pure and Applied Mathematics 1 Discrete and Continuous Dynamical Systems 1 Mathematical Communications 1 Honam Mathematical Journal 1 JIPAM. Journal of Inequalities in Pure & Applied Mathematics 1 International Mathematical Journal 1 Bulletin of the Malaysian Mathematical Sciences Society. Second Series 1 Proceedings of the Jangjeon Mathematical Society 1 Varāhmihir Journal of Mathematical Sciences 1 Hacettepe Journal of Mathematics and Statistics 1 Miskolc Mathematical Notes 1 Journal of Concrete and Applicable Mathematics 1 Iranian Journal of Fuzzy Systems 1 Cubo 1 Journal of Mathematics and Statistics 1 International Journal of Mathematical Analysis (Ruse) 1 European Journal of Pure and Applied Mathematics 1 Pacific-Asian Journal of Mathematics 1 Commentationes Mathematicae 1 Journal of Mathematical Extension 1 Iranian Journal of Mathematical Sciences and Informatics ...and 5 more Serials
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#### Fields

 408 Difference and functional equations (39-XX) 300 Functional analysis (46-XX) 177 Operator theory (47-XX) 53 Nonassociative rings and algebras (17-XX) 38 General topology (54-XX) 22 Real functions (26-XX) 10 Ordinary differential equations (34-XX) 9 Algebraic topology (55-XX) 6 Field theory and polynomials (12-XX) 6 Associative rings and algebras (16-XX) 5 Abstract harmonic analysis (43-XX) 4 Group theory and generalizations (20-XX) 4 Geometry (51-XX) 4 Numerical analysis (65-XX) 4 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 3 Measure and integration (28-XX) 2 Mathematical logic and foundations (03-XX) 2 Combinatorics (05-XX) 2 Order, lattices, ordered algebraic structures (06-XX) 2 Commutative algebra (13-XX) 2 Linear and multilinear algebra; matrix theory (15-XX) 2 Partial differential equations (35-XX) 2 Integral equations (45-XX) 2 Calculus of variations and optimal control; optimization (49-XX) 2 Global analysis, analysis on manifolds (58-XX) 2 Computer science (68-XX) 1 Number theory (11-XX) 1 Functions of a complex variable (30-XX) 1 Several complex variables and analytic spaces (32-XX) 1 Dynamical systems and ergodic theory (37-XX) 1 Harmonic analysis on Euclidean spaces (42-XX) 1 Probability theory and stochastic processes (60-XX) 1 Quantum theory (81-XX)

#### Citations contained in zbMATH

288 Publications have been cited 1,927 times in 741 Documents Cited by Year
Homomorphisms between Poisson JC*-algebras. Zbl 1091.39007
Park, Chun-Gil
2005
Fixed points and Hyers–Ulam–Rassias stability of Cauchy–Jensen functional equations in Banach algebras. Zbl 1167.39018
Park, Choonkil
2007
On the stability of the linear mapping in Banach modules. Zbl 1021.46037
Park, Chun-Gil
2002
Lie $$\ast$$-homomorphisms between Lie $$C^*$$-algebras and Lie $$\ast$$-derivations on Lie $$C^*$$-algebras. Zbl 1051.46052
Park, Chun-Gil
2004
Homomorphisms between Lie $$\mathrm{JC}^*$$-algebras and Cauchy-Rassias stability of Lie $$\mathrm{JC}^*$$-algebra derivations. Zbl 1091.39006
Park, C.-G.
2005
Non-Archimedean $$\mathcal L$$-fuzzy normed spaces and stability of functional equations. Zbl 1205.39023
2010
Generalized Hyers-Ulam stability of quadratic functional equations: a fixed point approach. Zbl 1146.39048
Park, Choonkil
2008
Functional inequalities associated with Jordan-von Neumann-type additive functional equations. Zbl 1133.39024
Park, Choonkil; Cho, Young Sun; Han, Mi-Hyen
2007
On the stability of a generalized quadratic and quartic type functional equation in quasi-Banach spaces. Zbl 1187.39035
Eshaghi Gordji, M.; Abbaszadeh, S.; Park, Choonkil
2009
Functional inequalities in non-Archimedean Banach spaces. Zbl 1203.39015
Cho, Yeol Je; Park, Choonkil; Saadati, Reza
2010
Homomorphisms between $$JC^*$$-algebras and Lie $$C^*$$-algebras. Zbl 1121.39030
Park, Chun Gil; Hou, Jin Chuan; Oh, Sei Qwon
2005
On the stability of $$J^*$$-homomorphisms. Zbl 1085.39026
2005
Stability of an additive-cubic-quartic functional equation. Zbl 1196.39015
Eshaghi Gordji, M.; Kaboli-Gharetapeh, S.; Park, Choonkil; Zolfaghari, Somayyeh
2009
Fuzzy stability of a functional equation associated with inner product spaces. Zbl 1182.39023
Park, Choonkil
2009
Stability of the Jensen-type functional equation in $$C^{\ast}$$-algebras: a fixed point approach. Zbl 1167.39020
Park, Choonkil; Rassias, John Michael
2009
Hyers-Ulam-Rassias stability of homomorphisms in quasi-Banach algebras. Zbl 1140.39016
Park, Choonkil
2008
On an approximate automorphism on a $$C^{*}$$-algebra. Zbl 1055.47032
Park, Chun-Gil
2004
Additive $$\rho$$-functional inequalities and equations. Zbl 1314.39026
Park, Choonkil
2015
Additive $$\rho$$-functional inequalities in non-Archimedean normed spaces. Zbl 1323.39023
Park, Choonkil
2015
Hyers-Ulam-Rassias stability of homomorphisms in quasi-Banach algebras associated to the Pexiderized Cauchy functional equation. Zbl 1123.39023
Najati, Abbas; Park, Choonkil
2007
Cauchy-Rassias stability of Cauchy-Jensen additive mappings in Banach spaces. Zbl 1118.39012
Baak, Choonkil
2006
The Aleksandrov problem in linear 2-normed spaces. Zbl 1045.46002
Chu, Hahng-Yun; Park, Chun-Gil; Park, Won-Gil
2004
Hyers-Ulam stability of additive set-valued functional equations. Zbl 1220.39030
Lu, Gang; Park, Choonkil
2011
Modified Trif’s functional equations in Banach modules over a $$C$$-algebra and approximate algebra homomorphisms. Zbl 1046.39022
Park, Chun-Gil
2003
The pexiderized Apollonius-Jensen type additive mapping and isomorphisms between $$C^*$$-algebras. Zbl 1144.39027
Najati, Abbas; Park, Choonkil
2008
Homomorphisms and derivations in $$C^{*}$$-algebras. Zbl 1157.39017
Park, Choonkil; Najati, Abbas
2007
Generalized Hyers-Ulam-Rassias stability of $$n$$-sesquilinear-quadratic mappings on Banach modules over $$C^*$$-algebras. Zbl 1074.39031
Park, Chun-Gil
2005
Stability of some set-valued functional equations. Zbl 1236.39034
Park, Choonkil; O’Regan, Donal; Saadati, Reza
2011
Homomorphisms between $$C^*$$-algebras associated with the Trif functional equation and linear derivations on $$C^*$$-algebras. Zbl 1058.39025
Park, Chun-Gil; Hou, Jinchuan
2004
Quadratic-quartic functional equations in RN-spaces. Zbl 1187.39036
Eshaghi Gordji, M.; Bavand Savadkouhi, M.; Park, Choonkil
2009
Generalized stability of $$C^{\ast}$$-ternary quadratic mappings. Zbl 1158.39020
Park, Choonkil; Cui, Jianlian
2007
Isomorphisms between $$C^{*}$$-ternary algebras. Zbl 1113.39033
Park, Choonkil
2007
On the stability of the quadratic mapping in Banach modules. Zbl 1017.39010
Park, Chun-Gil
2002
Maps preserving strong skew Lie product on factor von Neumann algebras. Zbl 1255.47043
Jianlian, Cui; Park, Choonkil
2012
Comment on ”Approximate ternary Jordan derivations on Banach ternary algebras” [Bavand Savadkouhi et al., J. Math. Phys.50, 042303 (2009)]. Zbl 1310.46047
Park, Choonkil; Gordji, M. Eshaghi
2010
The stability of a quartic type functional equation with the fixed point alternative. Zbl 1208.39036
Gordji, M. Eshaghi; Park, Choonkil; Savadkouhi, M. B.
2010
Nearly ternary derivations. Zbl 1141.39024
Amyari, Maryam; Baak, Choonkil; Moslehian, Mohammad Sal
2007
Universal Jensen’s equations in Banach modules over a $$C^*$$-algebra and its unitary group. Zbl 1087.39514
Park, Chun Gil
2004
On the Aleksandrov problem in linear $$n$$-normed spaces. Zbl 1066.46005
Chu, Hahng-Yun; Lee, Keonhee; Park, Chun-Gil
2004
A Poincaré-Birkhoff-Witt theorem for Poisson enveloping algebras. Zbl 1023.17014
Oh, Sei-Qwon; Park, Chun-Gil; Shin, Yong-Yeon
2002
3-Lie multipliers on Banach 3-Lie algebras. Zbl 1260.39033
Eshaghi Gordji, M.; Fazeli, A.; Park, Choonkil
2012
Generalized additive functional inequalities in Banach algebras. Zbl 1281.39032
Park, C.; Najati, A.
2010
2010
Hyers–Ulam stability of a generalized Apollonius type quadratic mapping. Zbl 1101.39020
Park, Chun-Gil; Rassias, Themistocles M.
2006
Approximate homomorphisms on $$JB^{\ast}$$-triples. Zbl 1104.46042
Park, Chun-Gil
2005
Linear derivations on Banach algebras. Zbl 1068.47039
Park, Chun-Gil
2004
Stability of homomorphisms and generalized derivations on Banach algebras. Zbl 1187.39046
Najati, Abbas; Park, Choonkil
2009
The $$N$$-isometric isomorphisms in linear $$N$$-normed $$C^{\ast}$$-algebras. Zbl 1125.39028
Park, Chun-Gil; Rassias, Themistocles M.
2006
Generalized additive mapping in Banach modules and isomorphisms between $$C^{\ast}$$-algebras. Zbl 1090.39015
Baak, Choonkil; Boo, Deok-Hoon; Rassias, Themistocles M.
2006
On the stability of the orthogonally quartic functional equation. Zbl 1117.39020
Park, Chungil
2005
Isomorphisms between unital $$C^{\ast}$$-algebras. Zbl 1101.39015
Park, Chun-Gil
2005
On the Jensen’s equation in Banach modules. Zbl 1035.39017
Park, Chun-Gil; Park, Won-Gil
2002
Stability of functional equations in Banach algebras. Zbl 1323.39025
Cho, Yeol Je; Park, Choonkil; Rassias, Themistocles M.; Saadati, Reza
2015
Hyers-Ulam-Rassias stability of a generalized Apollonius-Jensen type additive mapping and isomorphisms between $$C ^*$$-algebras. Zbl 1142.39023
Park, Choonkil
2008
Quantum $$n$$-space and Poisson $$n$$-space. Zbl 1016.16035
Oh, Sei-Qwon; Park, Chun-Gil; Shin, Yong-Yeon
2002
A fixed point approach to the stability of double Jordan centralizers and Jordan multipliers on Banach algebras. Zbl 1240.39060
Eshaghi Gordji, M.; Bodaghi, A.; Park, C.
2011
Isomorphisms in unital $$C^*$$-algebras. Zbl 1281.39027
Park, C.; Rassias, Th. M.
2010
On the stability of quadratic functional equations. Zbl 1146.39045
Lee, Jung Rye; An, Jong Su; Park, Choonkil
2008
Hyers-Ulam-Rassias stability of a generalized Euler-Lagrange type additive mapping and isomorphisms between $$C^*$$-algebras. Zbl 1125.39027
Park, Chun-Gil
2006
On the Hyers-Ulam-Rassias stability of generalized quadratic mappings in Banach modules. Zbl 1046.39023
Park, Chun-Gil
2004
A coupled fixed point theorem and application to fractional hybrid differential problems. Zbl 06563933
Bashiri, Tahereh; Vaezpour, Seyed Mansour; Park, Choonkil
2016
Ultra Bessel sequences of subspaces in Hilbert spaces. Zbl 1339.46022
Abdollahpour, Mohammad Reza; Shekari, Azam; Park, Choonkil; Shin, Dong Yun
2015
On the stability of set-valued functional equations with the fixed point alternative. Zbl 1283.39010
Kenary, Hassan Azadi; Rezaei, Hamid; Gheisari, Yousof; Park, Choonkil
2012
Homomorphisms and derivations in proper $$JCQ^{*}$$-triples. Zbl 1147.39012
Park, Choonkil; Rassias, Themistocles M.
2008
Isomorphisms between $$C^{*}$$-ternary algebras. Zbl 1112.39023
Park, Choonkil
2006
Generalized Hyers-Ulam stability of an Euler-Lagrange type additive mapping. Zbl 1114.39011
Park, Choonkil; Park, Jae Myoung
2006
Generalized quadratic mappings in several variables. Zbl 1058.39024
Park, Chun-Gil
2004
On the hyperstablity of a functional equation in commutative groups. Zbl 1336.39017
2016
A fixed point approach to the Hyers-Ulam stability of a functional equation in various normed spaces. Zbl 1278.39038
Kenary, Hassan Azadi; Jang, Sun Young; Park, Choonkil
2011
On the stability of a cubic functional equation. Zbl 1159.39014
Najati, Abbas; Park, Choonkil
2008
Homomorphisms in $$C^{*}$$-ternary algebras and $$JB^{*}$$-triples. Zbl 1127.39052
Park, Choonkil; Rassias, Themistocles M.
2008
Linear functional equations in Banach modules over a $$C^*$$-algebra. Zbl 1053.39044
Park, Chun-Gil
2003
Ulam’s type stability of higher order nonlinear delay differential equations via integral inequality of Grönwall-Bellman-Bihari’s type. Zbl 1428.34087
Zada, Akbar; Ali, Wajid; Park, Choonkil
2019
Stability and superstability of $$J^*$$-homomorphisms and $$J^*$$-derivations for a generalized Cauchy-Jensen equation. Zbl 1297.39038
2014
On the superstability of ternary Jordan $$C^*$$-homomorphisms. Zbl 1329.39027
2014
The iterative methods for solving nonlinear matrix equation $$X+A^\star X^{-1}A+B^{\star}X^{-1}B=Q$$. Zbl 1378.65109
2013
Integral type contractions in modular metric spaces. Zbl 06313733
2013
On the stability of $$\ast$$-derivations on Banach $$\ast$$-algebras. Zbl 1346.39036
Park, Choonkil; Bodaghi, Abasalt
2012
Approximate *-derivations and approximate quadratic *-derivations on $$C^*$$-algebras. Zbl 1271.39026
Jang, Sun Young; Park, Choonkil
2011
Generalized Ulam-Hyers stability of Jensen functional equation in Šerstnev PN spaces. Zbl 1192.39019
Eshaghi Gordji, M.; Ghaemi, M. B.; Majani, H.; Park, C.
2010
Homomorphisms between $$C^{*}$$-algebras and linear derivations on $$C^{*}$$-algebras. Zbl 1147.39011
Park, Choonkil; Boo, Deok-Hoon; An, Jong Su
2008
On the stability of $$\theta$$-derivations on $$JB^*$$-triples. Zbl 1127.39053
2007
Generalized Jensen’s equations in Banach modules over a $$C^{\ast}$$-algebra and its unitary group. Zbl 1073.39019
Boo, Deok-Hoon; Oh, Sei-Qwon; Park, Chun-Gil; Park, Jae-Myung
2003
Fixed point method for set-valued functional equations. Zbl 06817747
Park, Choonkil
2017
Fixed point theorems for improved $$\alpha$$-Geraghty contractions in partial metric spaces. Zbl 06616968
2016
Stability of the Jensen equation in $$C^*$$-algebras: a fixed point approach. Zbl 1278.39039
2012
The stability of the cubic functional equation in various spaces. Zbl 1225.39029
Saadati, Reza; Vaezpour, S. Mansour; Park, Choonkil
2011
Stability of the quadratic functional equation in non-Archimedean $$\mathcal{L}$$-fuzzy normed spaces. Zbl 1281.39043
Shakeri, Saleh; Saadati, Reza; Park, Choonkil
2010
Fixed points and the stability of an AQCQ-functional equation in non-Archimedean normed spaces. Zbl 1192.39024
Park, Choonkil
2010
Hyers-Ulam-Rassias stability of isometric homomorphisms in quasi-Banach algebras. Zbl 1144.39025
Lee, Sang-Hyuk; Park, Choonkil
2008
Fixed points and generalized Hyers-Ulam stability of quadratic functional equations. Zbl 1144.39028
Park, Choonkil; Rassias, Themistocles M.
2007
Multi-quadratic mappings in Banach spaces. Zbl 1044.39019
Park, Chun-Gil
2003
Fixed point theorems for almost $$\mathcal Z$$-contractions with an application. Zbl 1396.54039
Isik, Huseyin; Gungor, Nurcan Bilgili; Park, Choonkil; Jang, Sun Young
2018
Bi-additive $$s$$-functional inequalities and quasi-$$\ast$$-multipliers on Banach algebras. Zbl 06898723
Park, Choonkil
2018
Fundamental stabilities of the nonic functional equation in intuitionistic fuzzy normed spaces. Zbl 1372.39025
Bodaghi, Abasalt; Park, Choonkil; Rassias, John Michael
2016
Fundamental stabilities of an alternative quadratic reciprocal functional equation in non-Archimedean fields. Zbl 1334.39056
Bodaghi, Abasalt; Rassias, John Michael; Park, Choonkil
2015
Additivity of Jordan triple product homomorphisms on generalized matrix algebras. Zbl 1283.16034
Kim, Sang Og; Park, Choonkil
2013
Approximate $$n$$-Jordan $$\ast$$-homomorphisms in $$C^\ast$$-algebras. Zbl 1353.39027
Park, Choonkil; Ghasemi, Khatereh; Ghaleh, Shahram Ghaffary; Jang, Sun Young
2013
Random homomorphisms and random derivations in random normed algebras via fixed point method. Zbl 1310.39020
2012
On approximate homomorphisms: A fixed point approach. Zbl 1271.39023
2012
Some results in cone metric spaces with applications in homotopy theory. Zbl 1435.54028
Nazam, Muhammad; Arif, Anam; Mahmood, Hasan; Park, Choonkil
2020
Commuting and compatible mappings in digital metric spaces. Zbl 07152637
Ege, Ozgur; Jain, Deepak; Kumar, Sanjay; Park, Choonkil; Shin, Dong Yun
2020
Ulam’s type stability of higher order nonlinear delay differential equations via integral inequality of Grönwall-Bellman-Bihari’s type. Zbl 1428.34087
Zada, Akbar; Ali, Wajid; Park, Choonkil
2019
Additive $$s$$-functional inequalities and partial multipliers in Banach algebras. Zbl 1426.39025
Park, Choonkil
2019
Additive $$s$$-functional inequality and Hom-derivations in Banach algebras. Zbl 1404.39028
Park, Choonkil; Lee, Jung Rye; Zhang, Xiaohong
2019
Set-valued additive functional equations. Zbl 07251269
Park, Choonkil; Yun, Sungsik; Lee, Jung Rye; Shin, Dong Yun
2019
Symmetric biderivations on Banach algebras. Zbl 1428.39031
Park, Choonkil
2019
Additive functional equations and partial multipliers in $$C^*$$-algebras. Zbl 1435.46038
Park, Choonkil; Rassias, Michael Th.
2019
Approximate homomorphisms from ternary semigroups to modular spaces. Zbl 1435.17005
Park, Choonkil; Rassias, J. M.; Bodaghi, Abasalt; Kim, Sang Og
2019
The stability of an additive $$(\rho_1, \rho_2)$$-functional inequality in Banach spaces. Zbl 07082126
Park, Choonkil
2019
Bi-additive $$s$$-functional inequalities and quasi-multipliers on Banach algebras. Zbl 1417.39078
Park, Choonkil; Jin, Yuanfeng; Zhang, Xiaohong
2019
$$C^*$$-algebra-valued partial metric space and fixed point theorems. Zbl 07069865
Chandok, Sumit; Kumar, Deepak; Park, Choonkil
2019
Bi-additive $$s$$-functional inequalities and quasi-$$*$$-multipliers on Banach algebras. Zbl 1415.39021
Park, Choonkil
2019
Fixed point theorems for almost $$\mathcal Z$$-contractions with an application. Zbl 1396.54039
Isik, Huseyin; Gungor, Nurcan Bilgili; Park, Choonkil; Jang, Sun Young
2018
Bi-additive $$s$$-functional inequalities and quasi-$$\ast$$-multipliers on Banach algebras. Zbl 06898723
Park, Choonkil
2018
Set-valued additive $$\rho$$-functional inequalities. Zbl 06905262
Park, Choonkil
2018
On generalized Pata type contractions. Zbl 1447.54034
Jacob, Geno Kadwin; Khan, M. S.; Park, Choonkil; Yun, Sungsik
2018
$$C^\ast$$-ternary biderivations and $$C^\ast$$-ternary bihomomorphisms. Zbl 1401.46049
Park, Choonkil
2018
$$\mathcal {JHR}$$-operator pairs in $$C^{*}$$-algebra-valued modular metric spaces and related fixed point results via $$C_{*}$$-class functions. Zbl 06858709
Moeini, Bahman; Ansari, Arsalan Hojat; Park, Choonkil
2018
Stability of trigintic functional equation in multi-Banach spaces: fixed point approach. Zbl 1426.39029
Ramdoss, Murali; Aruldass, Antony Raj; Park, Choonkil; Paokanta, Siriluk
2018
$$\mathcal{JHR}$$-operator pairs in $$C^\ast$$-algebra-valued modular metric spaces and related fixed point results with application. Zbl 07024342
Moeini, Bahman; Ansari, Arslan Hojat; Park, Choonkil
2018
Approximation of derivations and the superstability in random Banach $$\ast$$-algebras. Zbl 1448.46064
2018
Fixed point method for set-valued functional equations. Zbl 06817747
Park, Choonkil
2017
Set-valued quadratic functional equations. Zbl 06785720
Lee, Jung Rye; Park, Choonkil; Shin, Dong Yun; Yun, Sungsik
2017
Quadratic $$\alpha$$-functional equations. Zbl 1382.39045
Park, Choonkil; Kim, Sang Og
2017
A coupled fixed point theorem and application to fractional hybrid differential problems. Zbl 06563933
Bashiri, Tahereh; Vaezpour, Seyed Mansour; Park, Choonkil
2016
On the hyperstablity of a functional equation in commutative groups. Zbl 1336.39017
2016
Fixed point theorems for improved $$\alpha$$-Geraghty contractions in partial metric spaces. Zbl 06616968
2016
Fundamental stabilities of the nonic functional equation in intuitionistic fuzzy normed spaces. Zbl 1372.39025
Bodaghi, Abasalt; Park, Choonkil; Rassias, John Michael
2016
Some new fixed point results in partial ordered metric spaces via admissible mappings and two new functions. Zbl 1331.54057
Liu, Xiao-Lan; Ansari, Arslan Hojat; Chandok, Sumit; Park, Choonkil
2016
Fixed points and additive $$\rho$$-functional equations. Zbl 1356.39007
Park, Choonkil; Shin, Dong Yun; Lee, Jung Rye
2016
Additive $$\rho$$-functional inequalities in fuzzy normed spaces. Zbl 1348.39014
Kim, Ji-Hye; Anastassiou, George A.; Park, Choonkil
2016
Generalized $$\varphi$$-weak contractive fuzzy mappings and related fixed point results on complete metric space. Zbl 1339.54030
Batool, Afshan; Kamran, Tayyab; Jang, Sun Young; Park, Choonkil
2016
Stability and hyperstability of generalized orthogonally quadratic ternary homomorphisms in non-Archimedean ternary Banach algebras: a fixed point approach. Zbl 1400.39030
Eshaghi Gordji, M.; Askari, G.; Ansari, N.; Anastassiou, G. A.; Park, C.
2016
Functional inequalities in Banach spaces and fuzzy Banach spaces. Zbl 1400.39022
Park, Choonkil; Lee, Jung Rye; Rassias, Themistocles M.
2016
Existence results for fractional hybrid differential systems in Banach algebras. Zbl 1419.34077
Bashiri, Tahereh; Vaezpour, Seiyed Mansour; Park, Choonkil
2016
A fixed point approach to the fuzzy stability of an aqcq-functional equation. Zbl 06749840
Park, Choonkil; Shin, Dong Yun; Saadati, Reza; Lee, Jung Rye
2016
Stability of pexiderized quadratic functional equation on a set of measure zero. Zbl 1351.39014
El-Fassi, Iz-iddine; Chahbi, Abdellatif; Kabbaj, Samir; Park, Choonkil
2016
Approximate ternary Jordan bi-homomorphisms in Banach Lie triple systems. Zbl 1333.39021
Gordji, Madjid Eshaghi; Rahimi, Amin; Park, Choonkil; Shin, Dong Yun
2016
Ternary Jordan ring derivations on Banach ternary algebras: a fixed point approach. Zbl 1333.39020
Gordji, Madjid Eshaghi; Bazeghi, Shayan; Park, Choonkil; Jang, Sun Young
2016
A fixed point approach to the stability of Euler-Lagrange sextic $$(a,b)$$-functional equations in Archimedean and non-Archimedean Banach spaces. Zbl 1333.39035
Ghaemi, Mohammad Bagher; Choubin, Mehdi; Saadati, Reza; Park, Choonkil; Shin, Dong Yun
2016
Stability of a lattice preserving functional equation on Riesz space: fixed point alternative. Zbl 1339.39021
2016
Fixed point results for modular ultrametric spaces. Zbl 1400.54049
Alaca, Cihangir; Ege, Meltem Erden; Park, Choonkil
2016
Stability of cubic and quartic $$\rho$$-functional inequalities in fuzzy normed spaces. Zbl 1329.39026
Park, Choonkill; Yun, Sungsik
2016
Additive $$\rho$$-functional inequalities and equations. Zbl 1314.39026
Park, Choonkil
2015
Additive $$\rho$$-functional inequalities in non-Archimedean normed spaces. Zbl 1323.39023
Park, Choonkil
2015
Stability of functional equations in Banach algebras. Zbl 1323.39025
Cho, Yeol Je; Park, Choonkil; Rassias, Themistocles M.; Saadati, Reza
2015
Ultra Bessel sequences of subspaces in Hilbert spaces. Zbl 1339.46022
Abdollahpour, Mohammad Reza; Shekari, Azam; Park, Choonkil; Shin, Dong Yun
2015
Fundamental stabilities of an alternative quadratic reciprocal functional equation in non-Archimedean fields. Zbl 1334.39056
Bodaghi, Abasalt; Rassias, John Michael; Park, Choonkil
2015
Approximation on the reciprocal functional equation in several variables in matrix non-Archimedean random normed spaces. Zbl 1422.39057
2015
Stability of functional inequalities associated with the Cauchy-Jensen additive functional equalities in non-Archimedean Banach spaces. Zbl 1328.39034
Kim, Sang Og; Bodaghi, Abasalt; Park, Choonkil
2015
Hyers-Ulam stability of a class of differential equations of second order. Zbl 1320.34082
2015
On a $$\mu$$-mixed trigonometric functional equation. Zbl 1333.39043
Zeglami, Driss; Fadli, Brahim; Park, Choonkil; Rassias, Themistocles M.
2015
Stability of derivations in fuzzy normed algebras. Zbl 1310.39015
Cho, Yeol Je; Park, Choonkill; Yang, Young-Oh
2015
Quadratic $$\rho$$-functional inequalities in Banach spaces. Zbl 1349.39042
Park, Choonkil
2015
Functional equations in matrix normed spaces. Zbl 1330.39030
Lee, Jung Rye; Park, Choonkil; Shin, Dong Yun
2015
Quadratic $$\rho$$-functional inequalities in $$\beta$$-homogeneous normed spaces. Zbl 1319.39014
Park, Choonkil; Kim, Sang Og; Lee, Jung Rye; Shin, Dong Yun
2015
Functional inequalities in non-Archimedean normed spaces. Zbl 1315.39016
Park, Choonkil
2015
Stability and superstability of $$J^*$$-homomorphisms and $$J^*$$-derivations for a generalized Cauchy-Jensen equation. Zbl 1297.39038
2014
On the superstability of ternary Jordan $$C^*$$-homomorphisms. Zbl 1329.39027
2014
Hyers-Ulam stability of general Jensen-type mappings in Banach algebras. Zbl 1314.39036
Lu, Gang; Park, Choonkil
2014
Prešić-Kannan-Rus fixed point theorem on partially order metric spaces. Zbl 1386.54020
Gordji, M. Eshaghi; Pirbavafa, S.; Ramezani, M.; Park, C.; Shin, D. Y.
2014
A note on IFN-spaces. Zbl 1343.54007
2014
Set-valued mappings in partially ordered fuzzy metric spaces. Zbl 1308.54035
2014
Comment on “Generalized ternary bi-derivations on ternary Banach algebras: a fixed point approach”. Zbl 1383.39030
Park, Choonkil; Eshaghi, Madjid Gordji; Lee, Jung Rye; Shin, Dong Yun
2014
Equivalence of semistability of Picard, Mann, Krasnoselskij and Ishikawa iterations. Zbl 1310.47107
2014
A new type fixed point theorem for a contraction on partially ordered generalized complete metric spaces with applications. Zbl 1347.54078
2014
3-variable additive $$\rho$$-functional inequalities and equations. Zbl 1302.39035
Kim, Myeongsu; Kim, Myeonhu; Kim, Yeonjun; Lee, Sanha; Park, Choonkil
2014
Additive $$\rho$$-functional inequalities. Zbl 1300.39008
Park, Choonkil
2014
Proper $$CQ^*$$-ternary algebras. Zbl 1318.47051
Park, Choonkil
2014
A new version of Mazur-Ulam theorem under weaker conditions in linear $$n$$-normed spaces. Zbl 1308.46017
Park, Choonkil; Alaca, Cihangir
2014
The iterative methods for solving nonlinear matrix equation $$X+A^\star X^{-1}A+B^{\star}X^{-1}B=Q$$. Zbl 1378.65109
2013
Integral type contractions in modular metric spaces. Zbl 06313733
2013
Additivity of Jordan triple product homomorphisms on generalized matrix algebras. Zbl 1283.16034
Kim, Sang Og; Park, Choonkil
2013
Approximate $$n$$-Jordan $$\ast$$-homomorphisms in $$C^\ast$$-algebras. Zbl 1353.39027
Park, Choonkil; Ghasemi, Khatereh; Ghaleh, Shahram Ghaffary; Jang, Sun Young
2013
Hyers-Ulam stability of a generalized additive set-valued functional equation. Zbl 1282.39030
Jang, Sun; Park, Choonkil; Cho, Young
2013
An AQCQ-functional equation in matrix normed spaces. Zbl 1417.39083
Lee, Jung Rye; Park, Choonkil; Shin, Dong Yun
2013
Functional equations and inequalities in paranormed spaces. Zbl 1292.39018
Park, Choonkil; Lee, Jung Rye
2013
Hyers-Ulam stability of functional equations in matrix normed spaces. Zbl 1284.39030
Lee, Jung Lee; Shin, Dong Yun; Park, Choonkil
2013
Jordan $$*$$-derivations and quadratic Jordan $$\ast$$-derivations on real $$C^*$$-algebras and real $$JC^*$$-algebras. Zbl 1370.39014
Bodaghi, Abasalt; Park, Choonkil
2013
Fixed points and fuzzy stability of an additive-quadratic functional equation. Zbl 1277.39045
Park, Choonkil; Najati, Abbas; Jang, Sun Young
2013
Additive functional inequalities in 2-Banach spaces. Zbl 1293.39018
Park, Choonkil
2013
Functional equations and inequalities in matrix paranormed spaces. Zbl 06313669
Park, Choonkil; Lee, Jung Rye; Shin, Dong Yun
2013
On the stability of Jordan $$\ast$$-derivation pairs. Zbl 1282.39024
Bodaghi, Abasalt; Jang, Sun Young; Park, Choonkil
2013
Orthogonality and quintic functional equations. Zbl 1275.39019
Park, Choonkil; Cui, Jian Lian; Gordji, Madjid Eshaghi
2013
Fixed points and the random stability of a mixed type cubic, quadratic and additive functional equation. Zbl 1279.39013
Gordji, M. Eshaghi; Ghanifard, Masumeh; Khodaei, Hamid; Park, Choonkil
2013
Maps preserving strong skew Lie product on factor von Neumann algebras. Zbl 1255.47043
Jianlian, Cui; Park, Choonkil
2012
3-Lie multipliers on Banach 3-Lie algebras. Zbl 1260.39033
Eshaghi Gordji, M.; Fazeli, A.; Park, Choonkil
2012
On the stability of set-valued functional equations with the fixed point alternative. Zbl 1283.39010
Kenary, Hassan Azadi; Rezaei, Hamid; Gheisari, Yousof; Park, Choonkil
2012
On the stability of $$\ast$$-derivations on Banach $$\ast$$-algebras. Zbl 1346.39036
Park, Choonkil; Bodaghi, Abasalt
2012
Stability of the Jensen equation in $$C^*$$-algebras: a fixed point approach. Zbl 1278.39039
2012
Random homomorphisms and random derivations in random normed algebras via fixed point method. Zbl 1310.39020
2012
On approximate homomorphisms: A fixed point approach. Zbl 1271.39023
2012
Park, Choonkil; Gordji, Madjid Eshaghi; Ghanifard, Masumeh; Khodaei, Hamid
2012
Orthogonal stability of a cubic-quartic functional equation. Zbl 1296.39026
Park, Choonkil
2012
An AQCQ-functional equation in paranormed spaces. Zbl 1302.39040
Park, Choonkil; Lee, Jung Rye
2012
Hyers-Ulam stability of exact second-order linear differential equations. Zbl 1291.34091
2012
A functional equation related to inner product spaces in non-Archimedean $$\mathcal L$$-random normed spaces. Zbl 1274.46132
2012
Approximate additive and quadratic mappings in 2-Banach spaces and related topics. Zbl 1281.39035
Cho, Y. J.; Park, C.; Eshaghi Gordji, M.
2012
Fixed points and approximately octic mappings in non-Archimedean 2-normed spaces. Zbl 1280.39019
2012
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