Results 31 to 40 of about 6,416 (290)

A new fixed point result and its application to existence theorem for nonconvex Hammerstein type integral inclusions

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
In this paper, a generalization of Nadler's fixed point theorem is presented for $H^+$-type $k$-multi-valued weak contractive mappings. We consider a nonconvex Hammerstein type integral inclusion and prove an existence theorem by using an $H^+$-type ...
H. Pathak, N. Shahzad
doaj   +1 more source

Common fixed points for nonexpansive type fuzzy mappings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1995
In this paper we define g-nonexpansive and g-nonexpansive type fuzzy mappings and prove common fixed point theorems for sequences of fuzzy mappings satisfying certain conditions on a Banach space. Thus we obtain fixed point theorems for nonexpansive type
Byung Soo Lee   +3 more
doaj   +1 more source

Common Fixed Point and Endpoint Theorems for a Countable Family of Multi-Valued Mappings

open access: yesMathematics, 2020
We prove some common fixed point and endpoint theorems for a countable infinite family of multi-valued mappings, as well as Allahyari et al. (2015) did for self-mappings.
Hüseyin Işık   +3 more
doaj   +1 more source

Multi-valued mappings and fixed points II

open access: yesTamkang Journal of Mathematics, 2006
In this paper, some hybrid fixed point principles for the sum of two multi-valued operators in a Banach space are proved and they are further applied to a certain integral inclu- sion of mixed type for proving the existence results under mixed Lipschitz and Carath´eodory conditions.
openaire   +4 more sources

Coincidence and fixed points of nonlinear Hybrid contractions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1989
In this Der, we show the existence of solutions of functional equations fx∈sx∩tx and x=fx∈sx∩Tx under certain contraction and asymptotic regularity conditions, where f, S and T are single-valued and multl-valued mappings on a metric space, respectively ...
Shyam Lal Singh, Ki Sik Ha, Yeol Je Cho
doaj   +1 more source

Gauss–Seidel method for multi-valued inclusions with Z mappings [PDF]

open access: yesJournal of Global Optimization, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Elisabetta Allevi   +3 more
openaire   +6 more sources

On the weakly(α, ψ, ξ)-contractive condition for multi-valued operators in metric spaces and related fixed point results

open access: yesOpen Mathematics, 2016
The aim of this paper is to introduce the concept of a new nonlinear multi-valued mapping so called weakly (α, ψ, ξ)-contractive mapping and prove fixed point results for such mappings in metric spaces.
Kutbi Marwan Amin, Sintunavarat Wutiphol
doaj   +1 more source

Stability of mappings on multi-normed spaces [PDF]

open access: yes, 2007
In this paper, we define multi-normed spaces, and investigate some properties of multi-bounded mappings on multi-normed spaces. Moreover, we prove a generalized Hyers–Ulam–Rassias stability theorem associated to the Cauchy additive equation for mappings ...
Dales, H.G.   +3 more
core  

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

System of Multi-Valued Mixed Variational Inclusions with XOR-Operation in Real Ordered Uniformly Smooth Banach Spaces

open access: yesMathematics, 2019
In this paper, we consider and study a system of multi-valued mixed variational inclusions with XOR-operation ⊕ in real ordered uniformly smooth Banach spaces. This system consists of bimappings, multi-valued mappings and Cayley operators.
Rais Ahmad   +4 more
doaj   +1 more source

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