Journals / Avrupa Bilim ve Teknoloji Dergisi / 2026 / Sayı: 34 Özel Sayı

Weak stability of 𝜺-isometry Mapping on Real Banach Spaces

Minanur Rohman(ONDOKUZ MAYIS UNIVERSITY)0000-0003-0941-3787
İlker Eryılmaz(ONDOKUZ MAYIS UNIVERSITY)0000-0002-3590-892X
Pages
110–114
Publication Date
2022-03-31
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Using this weak stability, there is a bounded linear left-inverse for non-surjective 𝜀-isometry.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The stability of standard 𝜀-isometry mapping in real Banach spaces cannot be determined without using the assumption of surjectivity.
📊
Key Findings & Data:However, this mapping remains weakly stable under weak topology.
💡
Conclusion & Impact:Using this weak stability, there is a bounded linear left-inverse for non-surjective 𝜀-isometry.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:𝜀-isometry · Banach space · stability

Abstract

The stability of standard 𝜀-isometry mapping in real Banach spaces cannot be determined without using the assumption of surjectivity. However, this mapping remains weakly stable under weak topology. Using this weak stability, there is a bounded linear left-inverse for non-surjective 𝜀-isometry.

Özet

The stability of standard 𝜀-isometry mapping in real Banach spaces cannot be determined without using the assumption of surjectivity. However, this mapping remains weakly stable under weak topology. Using this weak stability, there is a bounded linear left-inverse for non-surjective 𝜀-isometry.

🔖

Cite This Article

Rohman, M., Eryılmaz, İ. (2022). Weak stability of 𝜺-isometry Mapping on Real Banach Spaces. Avrupa Bilim ve Teknoloji Dergisi, Sayı: 34 Özel Sayı, 110–114. https://doi.org/10.31590/ejosat.1076318

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References (27)

  1. Benyamini, Y., & Lindenstrauss, J. (2000). Geometric nonlinear Functional Analysis I, Colloquium publications, vol. 48. American Mathematical Society.
  2. Bourgin, D. G. (1946). Aproximate isometries. Bull. Amer. Math. Soc, 52(8), 704-714. https://doi.org/10.1090/S0002-9904-1946-08638-3
  3. Cheng, L., & Dong, Y. (2020). Corrigendum to ‘A universal theorem for stability of 𝜀-isometries of Banach spaces’, Jour. Func. Anal., 269(1), 199-214, 2015. Jour. Func. Anal., 279, 108518. https://doi.org/10.1016/j.jfa.2020.108518
  4. Cheng, L., & Dong, Y. (2020). A note on the stability of nonsurjective 𝜀-isometries of Banach spaces, Proc. Amer. Math. Soc., 148, 4837-4844. https://doi.org/10.1090/proc/15110
  5. Cheng, L., Dong, Y., & Zhang, W. (2013). On stability of nonlinear non-surjective 𝜀-isometries of Banach spaces. Jour. Func. Anal., 264(3), 713-734. https://doi.org/10.1016/j.jfa.2012.11.008
  6. Dilworth, S. J. (1999). Approximate isometries on finite dimensional normed spaces. Bull. Lond. Math. Soc., 31(4), 471-476, 1999. https://doi.org/10.1112/S0024609398005591
  7. Dutrieux, Y., & Lancien, G. (2008). Isometric embeddings of compact spaces into Banach spaces. Jour. Func. Anal., 255(2), 494-501. https://doi.org/10.1016/j.jfa.2008.04.002
  8. Fabian, M., Habala, P., Hájek, P., Montesinos, V., & Zizler, V. (2010). Banach Space Theory: The Basis for Linear and Nonlinear Analysis. Springer.
  9. Figiel, T. (1968). On nonlinear isometric embedding of normed linear space. Bull. Acad. Polon. Sci. Ser. Sci. Math. Astronom. Phys., 16, 185-188.
  10. Gevirtz, J. (1983). Stability of isometries on Banach spaces. Proc. Amer. Math. Soc., 89(4), 633-636. https://doi.org/10.2307/2044596
  11. Gruber, P. M. (1978). Stability of isometries. Trans. Amer. Math. Soc., 245, 263-277. https://doi.org/10.1090/S0002-9947-1978-0511409-2
  12. Hyers, D. H., & Ulam, S. M. (1945). On approximate isometries. Bull. Amer. Math. Soc., 51(4), 288-292. https://doi.org/10.1090/S0002-9904-1945-08337-2
  13. Larman, D.G., & Phelps, R. R. (1979). Gateaux differentiability of convex functions on Banach spaces. Jour. Lond. Math. Soc., S2-20, 115-127. https://doi.org/10.1112/jlms/s2-20.1.115
  14. Mazur, S. & Ulam, S. (1932) Sur les transformations isométriques d’espaces vectoriels normés. C R Acad. Sci. Paris., 194, 946-948.
  15. Megginson, R. E. (1991). An Introduction to Banach Space Theory. Springer.
  16. Mukherjea, K. (2007). Differential Calculus in Normed Linear Spaces (2nd ed.). Hindustan Book Agency.
  17. Omladič, M. & Šemrl, P. (1995). On Nonlinear Perturbation of Isometries. Math. Ann., 303, 617-628.
  18. Phleps, R. R. (1993) Convex Functions, Monotone Operators, and Differentiability, Lecture Note in Mathematics, vol. 1364. Springer-Verlag, 1993.
  19. Qian, S. (1995). 𝜀-isometries embeddings. Proc. Amer. Math. Soc., 123(6), 1797-1803. https://doi.org/10.2307/2160993
  20. Rohman, M., Wibowo, R. B. E., & Marjono. (2016). Stability of an almost surjective epsilon-isometry mapping in the dual of real Banach spaces. Aust. Jour. Math. Anal. App., 13, 1-9.
  21. Schirotzek, W. (2007). Nonsmooth Analysis. Springer.
  22. Šemrl, P., & Väisälä, J. (2003). Nonsurjective nearisometris of Banach Spaces. J. Funct. Anal., 198(1), 268-278. https://doi.org/10.1016/S0022-1236(02)00049-6
  23. Tabor, J. (2000). Stability of surjectivity. J. Approx. Theory, 105(1), 166-175. https://doi.org/10.1006/jath.2000.3452
  24. Vestfrid, I. A. (2015). Stability of almost surjective ε-isometries of Banach spaces. J. Funct. Anal., 269(7), 2165-2170. https://doi.org/10.1016/j.jfa.2015.04.009
  25. Zhou, Y., Zhang, Z., & Liu, C. (2016). On linear isometries and ε-isometries between Banach spaces. Jour. Math. Anal. App., 435(1), 754-764. https://doi.org/10.1016/j.jmaa.2015.10.035
  26. Bishop, E., & Phelps, R. R. (1961). A proof that every Banach space is subreflexive. Bull. Amer. Math. Soc., 67, 97-98. https://doi.org/10.1090/S0002-9904-1961-10514-4
  27. Fabian, M., Habala, P., Hájek, P., Montesinos, V., & Zizler, V. (2010). Banach Space Theory: The Basis for Linear and Nonlinear Analysis. Springer.