TAILIEUCHUNG - báo cáo hóa học: " On the stability of pexider functional equation in non-archimedean spaces"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: On the stability of pexider functional equation in non-archimedean spaces | Saadati et al. Journal of Inequalities and Applications 2011 2011 17 http content 2011 1 17 Journal of Inequalities and Applications a SpringerOpen Journal RESEARCH Open Access On the stability of pexider functional equation in non-archimedean spaces Reza Saadati1 Seiyed Mansour Vaezpour2 and Zahra Sadeghi1 Correspondence RSAADATI@EML. CC department of Mathematics Science and Research Branch Islamic Azad University iau Tehran Iran Fulllist of author information is available at the end of the article SpringerOpen0 Abstract In this paper the Hyers-Ulam stability of the Pexider functional equation fi x y f2 x Ơ y f3 x f4 y in a non-Archimedean space is investigated where Ơ is an involution in the domain of the given mapping f. MSC 2010 26E30 39B52 39B72 46S10 Keywords Hyers-Ulam stability of functional equation Non-Archimedean space Quadratic Cauchy and Pexider functional equations The stability problem for functional equations first was planed in 1940 by Ulam 1 Let G1 be group and G2 be a metric group with the metric d v . Does for any 0 there exists Ỏ 0 such that for any mapping f G1 G2 which satisfies dlfxy f x f y Ỗ for all x y e G1 there exists a homomorphism h G1 G2 so that for any x e G1 we have df x h x In 1941 Hyers 2 answered to the Ulam s question when G1 and G2 are Banach spaces. Subsequently the result of Hyers was generalized by Aoki 3 for additive mappings and Rassias 4 for linear mappings by considering an unbounded Cauchy difference. The paper of Rassias 4 has provided a lot of influences in the development of the Hyers-Ulam-Rassias stability of functional equations for more details see 5 where a discussion on definitions of the Hyers-Ulam stability is provided by Moszner also 6-12 . In this paper we give a modification of the approach of Belaid et al. 13 in non-Archimedean spaces. Recently Cieplinski 14 studied and proved stability of multiadditive mappings in non-Archimedean normed spaces .

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