Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Sang Og Kim"'
Autor:
Sang Og Kim, Muhammad Nazam
Publikováno v:
Journal of Function Spaces, Vol 2021 (2021)
In this research article, by introducing a mapping φ defined on 0,∞4, with some axioms, we define two generalized contractions called FH+φ-contractions and φHP+-contractions. We investigate their mutual relation and establish an existence theore
Externí odkaz:
https://doaj.org/article/2fa0cc0e32e148d58707ceb1900e97f9
Publikováno v:
Journal of Function Spaces, Vol 2020 (2020)
In this paper, we introduce an ordered implicit relation and investigate some new fixed point theorems in a cone rectangular metric space subject to this relation. Some examples are presented as illustrations. We obtain a homotopy result as an applic
Externí odkaz:
https://doaj.org/article/f8432db627ba46ec877024b21500f532
Autor:
Sang Og Kim, Kandhasamy Tamilvanan
Publikováno v:
Mathematics, Vol 9, Iss 2, p 120 (2021)
In the present paper, we introduce a new type of quartic functional equation and examine the Hyers–Ulam stability in fuzzy normed spaces by employing the direct method and fixed point techniques. We provide some applications in which the stability
Externí odkaz:
https://doaj.org/article/de82d3b3d26346169c07bd213c0274cd
Autor:
Sang Og Kim
Publikováno v:
Mathematics, Vol 8, Iss 4, p 490 (2020)
We investigate the Hyers–Ulam stability of the well-known Fréchet functional equation that comes from a characterization of inner product spaces. We also show its hyperstability on a restricted domain. We work in the framework of quasi-Banach spac
Externí odkaz:
https://doaj.org/article/d62037051c0543919acdb80f5b9d7ffc
Autor:
Sang Og Kim, John Michael Rassias
Publikováno v:
Mathematics, Vol 7, Iss 11, p 1125 (2019)
In this work, we investigate the generalized Hyers-Ulam stability of the Apollonius type additive functional equation in modular spaces with or without Δ 2 -conditions. We study the same problem in fuzzy Banach spaces and β -homogeneous Banach spac
Externí odkaz:
https://doaj.org/article/72e46ca7210b4295a0a5cdf7651378b5
Publikováno v:
Mathematics, Vol 7, Iss 7, p 586 (2019)
In this paper, we noticed that the existence of fixed points of F-contractions, in F -metric space, can be ensured without the third condition (F3) imposed on the Wardowski function F : ( 0 , ∞ ) → R . We obtain fixed points as well as common fix
Externí odkaz:
https://doaj.org/article/a4cbfbc359a540bb9ba60c38c8a9adfd
Autor:
Abasalt Bodaghi, Sang Og Kim
Publikováno v:
Journal of Function Spaces, Vol 2014 (2014)
The quadratic reciprocal functional equation is introduced. The Ulam stability problem for an ϵ-quadratic reciprocal mapping f:X→Y between nonzero real numbers is solved. The Găvruţa stability for the quadratic reciprocal functional equations is
Externí odkaz:
https://doaj.org/article/a0339f9faf5946f7b070cb0612269dfe
Autor:
Abasalt Bodaghi, Sang Og Kim
Publikováno v:
Abstract and Applied Analysis, Vol 2013 (2013)
We obtain the general solution of the generalized mixed additive and quadratic functional equation fx+my+fx−my=2fx−2m2fy+m2f2y, m is even; fx+y+fx−y−2m2−1fy+m2−1f2y, m is odd, for a positive integer m. We establish the Hyers-Ulam stabilit
Externí odkaz:
https://doaj.org/article/db13e46db3f342f3b04c35edc891d200
Publikováno v:
Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas. 113:2175-2188
In this article, we investigate the generalized Hyers–Ulam stability of ternary homomorphisms from ternary semigroups into modular spaces. Ternary algebraic structures appear in theoretical and mathematical physics. We show the stability of that fu
Autor:
K. Tamilvanan, Sang Og Kim
Publikováno v:
Mathematics
Volume 9
Issue 2
Mathematics, Vol 9, Iss 120, p 120 (2021)
Volume 9
Issue 2
Mathematics, Vol 9, Iss 120, p 120 (2021)
In the present paper, we introduce a new type of quartic functional equation and examine the Hyers&ndash
Ulam stability in fuzzy normed spaces by employing the direct method and fixed point techniques. We provide some applications in which the s
Ulam stability in fuzzy normed spaces by employing the direct method and fixed point techniques. We provide some applications in which the s