A Comprehensive Review of Fixed Point Theory: Foundations, Applications, and Emerging Trends in Mathematical Spaces
Main Article Content
Abstract
Fixed point theory is a crucial branch of mathematical analysis that investigates the conditions under which a function returns a point to itself, symbolizing stability and equilibrium. This paper delves into various fixed point theorems within the contexts of metric spaces, Banach spaces, and Hilbert spaces, emphasizing their foundational importance and wide-ranging applications. The Banach Fixed Point Theorem guarantees the existence and uniqueness of fixed points for contraction mappings in complete metric spaces, while Brouwer's Fixed Point Theorem states that any continuous function mapping a compact convex set to it will have at least one fixed point. Recent developments have expanded these classical results to encompass new types of contraction mappings and generalized distance functions, enhancing their relevance in dynamic systems, control theory, and optimization challenges. Additionally, the paper discusses the Schauder Fixed Point Theorem in Banach spaces, highlighting its significance in analysing nonlinear operators. In Hilbert spaces, fixed point results are examined in relation to nonlinear integral equations and optimization methods, showcasing their practical implications in engineering and variation techniques. Emerging trends include the study of fixed point results in fuzzy and probabilistic environments, as well as the integration of computational approaches with traditional fixed point methods. This paper illustrates the continuous evolution of fixed point theory, connecting abstract mathematical principles with practical problem-solving across various fields. Finally, it proposes future research directions to further explore the potential of fixed point theory in modern mathematics.
Downloads
Metrics
Article Details
This work is licensed under a Creative Commons Attribution 4.0 International License.
You are free to:
- Share — copy and redistribute the material in any medium or format for any purpose, even commercially.
- Adapt — remix, transform, and build upon the material for any purpose, even commercially.
- The licensor cannot revoke these freedoms as long as you follow the license terms.
Under the following terms:
- Attribution — You must give appropriate credit , provide a link to the license, and indicate if changes were made . You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
Notices:
You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation .
No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.
References
Alghamdi, M. A., Alharbi, K. A., and Alzahrani, S. S. (2019). Fixed point results for nonlinear differential equations in Banach spaces. Journal of Fixed Point Theory and Applications, 21(1), 1-12.
Ba, D. D., Nguyen, M. K., and Thanh, T. V. (2018). Fixed point results under generalized distance functions. Applied Mathematics and Computation, 322, 305-317.
Berinde, V., and Borcut, I. (2019). New contraction mappings and their fixed point properties. Mathematics, 7(10), 930.
Browder, F. E. (1967). Nonlinear functional analysis and iterative methods. Proceedings of the National Academy of Sciences of the United States of America, 58(4), 1532-1535.
Goeff, A., Nguyen, D. T., and Al-Bulushi, F. A. Z. (2018). Convergence properties of iterative methods in Hilbert spaces. Numerical Algorithms, 78(1), 1-15.
Goh, B. O., Ali, M. M., and Cheng, K. L. (2018). Fixed point results in reflexive and non-reflexive Banach spaces. Fixed Point Theory, 19(1), 45-64.
Krasnoselskii, M. A. (1966). Fixed points and functional analysis. Journal of Mathematical Sciences, 1(1), 203-206.
Schauder, J. (1930). Über den Punkt der fixen Punktes. Mathematische Annalen, 102(1), 425-445.