This document presents a fixed point theorem for mappings in Banach spaces. It establishes conditions under which such mappings have unique fixed points. Specifically, it proves that if a mapping F satisfies certain contraction conditions involving rational expressions, and the contraction coefficients satisfy certain inequalities, then F has a unique fixed point. The proof considers two cases for the rational expressions and shows that in both cases, the mapping defines a Cauchy sequence that converges to a fixed point. The result generalizes previous fixed point theorems established by other authors for non-expansive mappings.
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The purpose of this work is to extend and generalize some common fixed point theorems for Expansive type mappings in complete cone metric spaces. We are attempting to generalize the several well- known recent results. Mathematical subject classification; 54H25, 47H10
We present a strong convergence implicit Runge-Kutta method, with four stages, for solution of
initial value problem of ordinary differential equations. Collocation method is used to derive a continuous
scheme; and the continuous scheme evaluated at special points, the Gaussian points of fourth degree Legendre
polynomial, gives us four function evaluations and the Runge-Kutta method for the iteration of the solutions.
Convergent properties of the method are discussed. Experimental problems used to check the quality of the
scheme show that the method is highly efficient, A – stable, has simple structure, converges to exact solution
faster and better than some existing popular methods cited in this paper.
X std maths - Relations and functions (ex 1.1), Maths, IX std Maths, Samacheerkalvi maths, II year B.Ed., Pedagogy, Mathematics, Relation, Functions, Cartesian product, ordered pair, definition of cartesian product, standard infinite set, cartesian product of three sets,
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Simultaneous Triple Series Equations Involving Konhauser Biorthogonal Polynom...IOSR Journals
Biorthogonal polynomials are of great interest for Physicists.Spencer and Fano [9] used the biorthogonal polynomials (for the case k = 2) in carrying out calculations involving penetration of gamma rays through matter.In the present paper an exact solution of simultaneous triple series equations involving Konhauser-biorthogonal polynomials of first kind of different indices is obtained by multiplying factor technique due to Noble.[4] This technique has been modified by Thakare [10, 11] to solve dual series equations involving orthogonal polynomials which led to disprove a possible conjecture of Askey [1] that a dual series equation involving Jacobi polynomials of different indices can not be solved. In this paper the solution of simultaneous triple series equations involving generalized Laguerre polynomials also have been discussed as a charmfull particular case.
ABSTRACT: In this paper, we construct new classes of derivative-free of tenth-order iterative methods for solving nonlinear equations. The new methods of tenth-order convergence derived by combining of theSteffensen's method, the Kung and Traub’s of optimal fourth-order and the Al-Subaihi's method. Several examples to compare of other existing methods and the results of new iterative methods are given the encouraging results and have definite practical utility.
In this paper we introduce the notions of Fuzzy Ideals in BH-algebras and the notion
of fuzzy dot Ideals of BH-algebras and investigate some of their results.
ملزمة الرياضيات للصف السادس التطبيقي الفصل الاول الاعداد المركبة 2022anasKhalaf4
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ملزمة الرياضيات للصف السادس التطبيقي الفصل الثاني القطوع المخروطية 2022anasKhalaf4
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2022 ملزمة الرياضيات للصف السادس الاحيائي الفصل الثالث تطبيقات التفاضلanasKhalaf4
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شرح المواضيع الرياضية بالتفصيل وبأسلوب واضح ومفهوم لجميع المستويات
حلول الاسألة الوزارية
اعداد الدكتور أنس ذياب خلف
email: anasdhyiab@gmail.com
Salah satu materi perkuliahan prodi pendidikan matematika mata kuliah teori himpunan dan logika matematika - Diagram Venn, Contoh Soal mengenai Diagram Venn
Non-unique Fixed Points of Self Mappings in Bi-metric Spaces IIJSRJournal
In this paper, we prove a few non-unique fixed-point results of mapping on a set with bi-metrics using θ – contraction. We also give an example that justifies our results. In the literature, our result generalized many results.
Simultaneous Triple Series Equations Involving Konhauser Biorthogonal Polynom...IOSR Journals
Biorthogonal polynomials are of great interest for Physicists.Spencer and Fano [9] used the biorthogonal polynomials (for the case k = 2) in carrying out calculations involving penetration of gamma rays through matter.In the present paper an exact solution of simultaneous triple series equations involving Konhauser-biorthogonal polynomials of first kind of different indices is obtained by multiplying factor technique due to Noble.[4] This technique has been modified by Thakare [10, 11] to solve dual series equations involving orthogonal polynomials which led to disprove a possible conjecture of Askey [1] that a dual series equation involving Jacobi polynomials of different indices can not be solved. In this paper the solution of simultaneous triple series equations involving generalized Laguerre polynomials also have been discussed as a charmfull particular case.
ABSTRACT: In this paper, we construct new classes of derivative-free of tenth-order iterative methods for solving nonlinear equations. The new methods of tenth-order convergence derived by combining of theSteffensen's method, the Kung and Traub’s of optimal fourth-order and the Al-Subaihi's method. Several examples to compare of other existing methods and the results of new iterative methods are given the encouraging results and have definite practical utility.
In this paper we introduce the notions of Fuzzy Ideals in BH-algebras and the notion
of fuzzy dot Ideals of BH-algebras and investigate some of their results.
ملزمة الرياضيات للصف السادس التطبيقي الفصل الاول الاعداد المركبة 2022anasKhalaf4
طبعة جديدة ومنقحة
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شرح المواضيع الرياضية بالتفصيل وبأسلوب واضح ومفهوم لجميع المستويات
حلول الاسألة الوزارية
اعداد الدكتور أنس ذياب خلف
email: anasdhyiab@gmail.com
2022 ملزمة الرياضيات للصف السادس التطبيقي الفصل الثالث - تطبيقات التفاضلanasKhalaf4
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حلول الاسألة الوزارية
اعداد الدكتور أنس ذياب خلف
email: anasdhyiab@gmail.com
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اعداد الدكتور أنس ذياب خلف
email: anasdhyiab@gmail.com
ملزمة الرياضيات للصف السادس التطبيقي الفصل الثاني القطوع المخروطية 2022anasKhalaf4
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حلول الاسألة الوزارية
اعداد الدكتور أنس ذياب خلف
email: anasdhyiab@gmail.com
2022 ملزمة الرياضيات للصف السادس الاحيائي الفصل الثالث تطبيقات التفاضلanasKhalaf4
طبعة جديدة ومنقحة
حل تمارين الكتاب
شرح المواضيع الرياضية بالتفصيل وبأسلوب واضح ومفهوم لجميع المستويات
حلول الاسألة الوزارية
اعداد الدكتور أنس ذياب خلف
email: anasdhyiab@gmail.com
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International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
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Similar to A fixed point result in banach spaces (20)
1. Mathematical Theory and Modeling www.iiste.org
ISSN 2224-5804 (Paper) ISSN 2225-0522 (Online)
Vol.4, No.1, 2014
109
A Fixed Point Result in Banach Spaces
R.K.Sharma1
, Bharti Choure2
, R.K. Bhardwaj3
1&2
Department of Mathematics,B.U.I.T Bhopal-462026,India
3
Department of Mathematics, TRUBA, Institute of engineering & IT Bhopal
Email:rkbhardwaj100@gmail.com
Abstract
In the present paper we establish some fixed point theorems in Banach space taking rational expression. Our
Result Generalize the result of many authors.
Key words: Fixed point, common fixed point, rational expressions, Banach spaces
Introduction: Fixed point has drawn the attentions of the authors working in non-linear analysis, the study of
non-expansive mapping and the existence of fixed point. The non-expansive mappings include contraction as
well as contractive mappings. Browder [1] was the first mathematician to study non-expansive mappings; he
applied these results for proving the existence of solutions of certain integral equations.
It is well known that differential and the integral equations that arise in physical problems are generally
non-linear, therefore the fixed point technique provides a powerful tool for obtaining the solutions of these
equations which otherwise are difficult to solve by ordinary methods. No doubt, it is also true that some
qualitative properties of the solution of related equations is lost by functional analysis approach. Many attempts
have been made in this direction to formulate fixed point theorems. Schauder, J. formulated the well known
Schauder’s fixed point principle in 1930.
Browder [1], Gohde [6] and Kirk [10] have independently proved a fixed point theorem for non-expansive
mappings defined on a closed bounded and convex subset of a uniformly convex Banach space and in the spaces
with richer generalizations of non-expansive mappings, prominent being Datson [2], Emmanuele [3], Goebel
[4], Goebel and Zlotkienwicz [5], Iseki [7], Sharma & Rajput [11], Singh and Chatterjee [13]. They have
derived valuable results with non-contraction mapping in Banach space.
Our object in this chapter is to prove some fixed and common fixed point theorems using Banach space.
Our results include the results of Goebel and Zlotkiewicz [5], Iseki [7], Sharma and Bajaj [12], Khan
[9], Jain and Jain [8]. We shall prove:-
Theorem-1 :
Let F be a mapping of a Banach space x into itself. If F satisfies the following conditions;
1. F2
= I, where I is the identity mapping. ……….(1.1)
2. ‖ ( ) ( )‖ ……….(1.2)
≤ a1 [‖ ( )‖ ‖ ( )‖] + a2 [‖ ‖
+ Max { }
Where
P =
‖ ( )‖‖ ( )‖ ‖ ( )‖ ‖ ( )‖
‖ ‖
‖ ( )‖ ‖ ( )‖ ‖ ( )‖ ‖ ( )‖
‖ ‖
For every x,y X, where 0 < a1,a2,a3 and 4a1 + a2 + 8a3 < 2, then F has a fixed point, if a2 + a3 <
1,then F has a unique fixed point.
Proof: Suppose x be a point in Banach space X. Taking
y = (F+I) (x)
z = F(y) and
u = 2y-z
We have
‖ ‖ = ‖ ( ) ( )‖ = ‖ ( ) ( ( ))‖
5. Mathematical Theory and Modeling www.iiste.org
ISSN 2224-5804 (Paper) ISSN 2225-0522 (Online)
Vol.4, No.1, 2014
113
‖ ( )‖ [( +3a3) ‖ ( )‖ + (a1 + a2/2 + a3) ‖ ( )‖ ]
Therefore ‖ ( )‖ ‖ ( )‖
Where
q=
( )
( )
since 4a1 + a2 +8a3 < 2
on taking
G = ( ) X
‖ ( ) ( )‖ ‖ ( ) ‖
=‖ ( )( ) ‖
= ‖ ( )‖
< ⁄ ‖ ( )‖
By the definition of q, we claim that {Gn
(x)} is a Cauchy sequence in X. Therefore, by the property of
completeness, {Gn
(x)} converges to some element in X.
i.e. ( ) = x0
Which implies G( x0 ) = x0
Hence F(x0) = x0
i.e. x0 is a fixed point of F.
For the uniqueness, if possible let y0 (≠ x0) be another fixed point of F. Then
‖ ‖= ‖ ( ) ( )‖
≤ a1 [ ‖ – ( )‖ + ‖ – ( ) ‖ ] + a2 ‖ – ‖
+ a3
‖ ( )‖ ‖ ( )‖ ‖ ( )‖‖ ( )‖
‖ ‖
=a2‖ ‖
Since a2 < 1, therefore
‖x0 - y0‖ = 0
Hence x0 = y0
References:-
[1] BROWDER F.E. Non-expansive non-linear operators in Banach space. Proc. Nat. Acad. Sci. U.S.A.
54,1041-1044,(1965).
[2] DATSON,W.G.Jr. Fixed points of quasi non-expansive mappings. J.Austral. Math. Soc.13, 167-170(1972).
[3] EMMANUELE, G. Fixed point theorems in complete metric space. Not linear Anal. 5, 287-292,(1981).
[4] GOEBEL, K. An elementary proof of the fixed theorem of Browder and Kirk. Michigan Math. J. 16, 381-
383, (1969).
[5] GOEBEL, K. AND ZLOTKIEWICZ, E. Some fixed point theorems in Banach spaces. Collq. Math. 23,
103-106,(1971).
[6] GOHDE Zum prizip dev kontraktiven abbildung. Math.Nachr. 30, 251-258, (1965).
[7] ISEKI,K. Fixed point theorem in Banach spaces, Math. Sem. Notes Kobe Univ. vol.2(1), paper no.3,4 pp,
(1974).
6. Mathematical Theory and Modeling www.iiste.org
ISSN 2224-5804 (Paper) ISSN 2225-0522 (Online)
Vol.4, No.1, 2014
114
[8] JAIN, R.K. AND JAIN, R. A result on fixed points in Banach Space. Acta Indica. vol. XVM No.3, 294-
297(1989)
[9] KHAN, M.S. Fixed point and their approximation in Banach spaces for certain commuting mappings.
Glasgow Math, Journal 23, (1982).
[10] KIRK,W.A. Fixed point theorem for non-expansive mapping-II contemp. Math. 18, 121-140,(1983).
[11] SHARMA, PL AND RAJPUT, SS. Fixed point theorems in Banach space. Vikram math. Jour. vol.4,
35,(1983).
[12] SHARMA,PL AND BAJAJ, N. Fixed point theorem in Banach Space for commuting mappings. Jour. of
MACT vol.16, 11-13, (1983).
[13] SINGH, M.R. AND CHATTERJEE. Fixed point theorems in Banach space. Pure Math. Manu.vol.6,
53-61,(1987).