Results 31 to 40 of about 4,766,720 (102)
The stability of an additive (ρ_1, ρ_2)-functional inequality in Banach spaces
Journal of Mathematical Inequalities, 2019 In this paper, we introduce and solve the following additive (ρ1,ρ2) -functional inequality ‖ f (x+ y)− f (x)− f (y)‖ ‖ρ1( f (x+ y)+ f (x− y)−2 f (x))‖ (1) + ∥∥∥ρ2 ( 2 f ( x+ y 2 ) − f (x)− f (y) ∥∥∥ , where ρ1 and ρ2 are fixed nonzero complex numbers ...
Choonkill Park
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A general existence principle for fixed point theorems in D‐metric spaces
International Journal of Mathematics and Mathematical Sciences, Volume 23, Issue 7, Page 441-448, 2000., 2000 We establish two general principles for fixed point theorems in D‐metric spaces, and then show that several theorems in D‐metric spaces follow as corollaries of these general principles.
B. C. Dhage, A. M. Pathan, B. E. Rhoades
wiley +1 more source
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2015 In this paper, by combining a modified extragradient scheme with the viscosity approximation technique, an iterative scheme is developed for computing the common element of the set of fixed points of a sequence of asymptotically nonexpansive mappings and
Petruşel Adrian, Sahu D.R., Sagar Vidya
doaj +1 more source
, 2013 In this paper, we give strong convergence theorems for the modified S-iteration process of asymptotically quasi-nonexpansive mappings on a CAT(0) space which extend and improve many results in the literature.MSC: Primary 47H09; secondary 47H10.
A. Şahin, M. Basarir
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A NOTE ON THE PAPER “ON COMPLETENESS IN METRIC SPACES AND FIXED POINT THEOREMS"
, 2020 In the present note, we show that the assumption of continuity used in the fixed point theorem of Gregori et al. (Results Math. 73 (2018), no. 4, Art. 142, 13) can be relaxed to some weaker version of continuity.
Deepak Khantwal, U. C. Gairola
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Related fixed points for set valued mappings on two metric spaces
International Journal of Mathematics and Mathematical Sciences, Volume 23, Issue 3, Page 205-210, 2000., 2000 Some related fixed points theorems for set valued mappings on two complete and compact metric spaces are proved.
Brian Fisher, Duran Türkoglu
wiley +1 more source
Approximating fixed points of λ‐firmly nonexpansive mappings in Banach spaces
International Journal of Mathematics and Mathematical Sciences, Volume 24, Issue 7, Page 441-448, 2000., 2000 We study the convergence of the Ishikawa iteration methods to fixed points for the result of Smarzewski (1991). Our theorems also improve recent theorems due to Sharma and Sahu (1996).
Gang-Eun Kim
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Dynamics and Ulam Stability for Fractional q-Difference Inclusions via Picard Operators Theory
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2021 In this manuscript, by using weakly Picard operators we investigate the Ulam type stability of fractional q-difference An illustrative example is given in the last section.
Abbas Saïd +2 more
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Some results on maximal elements
International Journal of Mathematics and Mathematical Sciences, Volume 23, Issue 6, Page 409-413, 2000., 2000 We prove some results on maximal elements using the KKM‐map principle.
Antonio Carbone
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On the hyperstability of a Cauchy-Jensen type functional equation in Banach spaces
, 2015 4, pp. 359-375, December 2015.Universidad Cat´olica del NorteAntofagasta - ChileAbstractIn this paper, we establish some hyperstability results of the fol-lowing Cauchy-Jensen functional equationf(x+y2+z)+f(x−y2+z)=f(x)+2f(z)in Banach spaces.Subjclass ...
Iz-iddine El-Fassi, S. Kabbaj
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