Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Boyan Zlatanov"'
Publikováno v:
AIMS Mathematics, Vol 9, Iss 8, Pp 21890-21917 (2024)
We provided a generalization of the existence and uniqueness of fixed points in partially ordered metric spaces for a monotone map. We applied the major results in the investigation of coupled fixed points for ordered pairs of two maps that met vario
Externí odkaz:
https://doaj.org/article/c4d2f009a2ce452bae530877d9bf8c3d
Publikováno v:
Econometrics, Vol 12, Iss 2, p 18 (2024)
In the study we explore an oligopoly market for equilibrium and stability based on statistical data with the help of response functions rather than payoff maximization. To achieve this, we extend the concept of coupled fixed points to triple fixed po
Externí odkaz:
https://doaj.org/article/a39afc32def246308e544605c88bce4d
Publikováno v:
Mathematics, Vol 12, Iss 5, p 724 (2024)
We develop an empirical model of the market for mobile services in the USA based on providers’ response functions. Guided by a duopoly model, we obtain our empirical response functions from an approximation of quarterly response data on smartphone
Externí odkaz:
https://doaj.org/article/a5eb05e2760e49838e9ca31c052ca954
Publikováno v:
Mathematics, Vol 12, Iss 3, p 371 (2024)
This article presents a hybrid approach to assessing students’ foreign language proficiency in a cyber–physical educational environment. It focuses on the advantages of the integrated assessment of student knowledge by considering the impact of a
Externí odkaz:
https://doaj.org/article/d8ea0155afc7441380d786af82bd0da5
Publikováno v:
Axioms, Vol 12, Iss 7, p 628 (2023)
We investigate fixed points for p cyclic maps by introducing a new notion of p–cyclic infimum summing maps and a generalized best proximity point for p–cyclic maps. The idea generalizes some results about best proximity points in order to widen t
Externí odkaz:
https://doaj.org/article/012a59ea7cc34c8e87301bd3434b076a
Autor:
Stanimir Kabaivanov, Boyan Zlatanov
Publikováno v:
Nonlinear Analysis, Vol 26, Iss 1 (2021)
We present a possible kind of generalization of the notion of ordered pairs of cyclic maps and coupled fixed points and its application in modelling of equilibrium in oligopoly markets. We have obtained sufficient conditions for the existence and uni
Externí odkaz:
https://doaj.org/article/b9ee9593c43648d3ba86ee1720ab91eb
Publikováno v:
Mathematics, Vol 10, Iss 8, p 1304 (2022)
We investigated the existence and uniqueness of coupled best proximity points for some cyclic and semi-cyclic maps in a reflexive Banach space. We found sufficient conditions, ensuring the existence of coupled best proximity points in reflexive Banac
Externí odkaz:
https://doaj.org/article/d81bc47d6e5e40c4989c2dc86bdc0153
Publikováno v:
Symmetry, Vol 14, Iss 3, p 605 (2022)
In this paper we generalize Hardy–Rogers maps in the context of coupled fixed points. We comment on the symmetry of some of the coefficients involved in the Hardy–Rogers condition, and thus, we deduce a simpler formula. We generalize, with the he
Externí odkaz:
https://doaj.org/article/005c57c6f1a346a4a5e8f80533975969
Publikováno v:
Axioms, Vol 10, Iss 1, p 39 (2021)
We generalize the notion of coupled fixed (or best proximity) points for cyclic ordered pairs of maps to p-cyclic ordered pairs of maps. We find sufficient conditions for the existence and uniqueness of the coupled fixed (or best proximity) points. W
Externí odkaz:
https://doaj.org/article/6b1ae2bf9fca4fb3aa8b6da0dcd9cf82
Publikováno v:
Axioms, Vol 10, Iss 2, p 44 (2021)
We have obtained a new class of ordered pairs of multivalued maps that have pairs of coupled fixed points. We illustrate the main result with two examples that cover a wide range of models. We apply the main result in models in duopoly markets to get
Externí odkaz:
https://doaj.org/article/88681a4113c74c66b0f3cb5841ad8ce0