The Hyperreals enlargement sets and its application on compact topology

Authors

  • Dr.Ragab A. Elageili Benghazi of university
  • Mr. Haleemah I. Ali Benghazi of university

DOI:

https://doi.org/10.37376/asj.vi6.5139

Keywords:

Hyperreal numbers, infinitesimal, ultrafilter,, enlargement set, nonstandard elements, halo, compact topology.

Abstract

 This paper presents a study of hyperreal numbers and their relations to real numbers. The hyperreals are a number system extension of the real number system. With this system, simpler and more intuitively natural definition (topological notions of special points and compactness), proofs (Heine-Borel theorem), and new concepts (limited, unlimited numbers, enlargement sets, and halos) of mathematical interest are offered.

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Author Biographies

Dr.Ragab A. Elageili , Benghazi of university

أستاذ مشارك – قسم الرياضيات – كلية العلوم -جامعة بنغازي

Mr. Haleemah I. Ali, Benghazi of university

مساعد محاضر – القسم العام – كلية العلوم -  جامعة بنغازي

References

References

Barhett, J.. (2018). Hyperreal numbers for infinite divergent series. The Blyth Institute.

Goldblat, R. (1998). Lectures on the Hyperreal. Springer

Gordon, E., Kusraer, A. & Kutatelodzo, S. (2002) Infinitesimal Analysis.

Habil, E., & Ghneim, A. (2015). Non-standard Topology on R. IUG Journal of Natural and Engineering Studies. (vol 23, No 2, pp 1-11).

Kanovei, V., & Shelah, S. (2003). A definable non-standard model of the reals.

Keisler, H. (2007). Foundations of Infinitesimal Calculus.

Krakoff, G. (2015). Hyperreal and Brief Introduction to non-standard analysis.

Masithoh, R., Guswanto, B., & Maryani, S. (2020). The Validity of the properties of real numbers set to hyperreal numbers set. Journal of physics: conference series.

Rayo, D. (2015). Introduction to Non-Standard Analysis .

Lindstrom, T. (1998). Nonstandard Analysis and its Applications. In (ed. N. Cutland). London Mathematical Society Student Texts, Vol 10, Cambridge University Press.

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Published

2024-05-04

How to Cite

A. Elageili , D. ., & I. Ali, M. H. . . (2024). The Hyperreals enlargement sets and its application on compact topology. Almanara Scientific Journal, (6), 117–123. https://doi.org/10.37376/asj.vi6.5139

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Section

Articles