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Sorgenfrey Line and Differentiated Continuous Mappings
Maslyuchenko Volodymyr Kyrylovych 1 , Myronyk Oksana Dmytrivna 1,2
1 Department of Mathematical Analysis, Yuriy Fedkovych Chernivtsi National University, Chernivtsi, 58000, Ukraine
2 Professional College of Yuriy Fedkovych Chernivtsi National University, Chernivtsi , 58000, Ukraine
Keywords: Sorgenfrey Line
Abstract

The set __ of discontinuity points of differentiated continuous mappings __ with values ​​in the Sorgenfrey line _ is studied. In particular, it is shown that __ if the space __ is connected or locally connected. Further, for an arbitrary subset __ of a rational line __ and a point __, a differentiated continuous function __ is constructed. It is also found that there exists a differentiated continuous function __ such that ___ . Similar results hold for the mappings __

References

1. Sorgenfrey R.H. On the topological product of paracompact spaces // Bull. Amer. Math. Soc. – 1947. – 53. P. 631- 632.
2. Alexandroff P., Urysohn P. Memoire sur les espaces topologiques compacts // Verh. Akad. Wetensch. Amsterdam. - 1929. - 14. - 1-96p.
3. Alexandrov P.S., Uryson P.S.Memoir on compact topological spaces. - M.: Nauka, 1971. - 144p.
4. Engelking R.General topology. - M.: Mir, 1986. - 752 p.
5. M.A. PatrakeevThe topology of the Sorgenfrei line. Ph.D. physics and mathematics on-uk: 01.01.04. - Ekaterenburg, 2005. - 70 p.
6. Kozhukar O.G., Maslyuchenko V.K.Around Debs's theorem on multivalued mappings // Nauk. end Chernivtsi University Vol. 191 – 192. Mathematics. – Chernivtsi: Ruta, 2004. – P. 61 - 66.
7. Maslyuchenko V.K., Fotii O.G. Continuous from below mappings with compact values ​​in the Sorgenfrey line // Mat. studii. – 2005. – 24, No. 2. – P. 203 - 206.

Cite
ACS Style
Maslyuchenko, V.K.; Myronyk, O.D. Sorgenfrey Line and Differentiated Continuous Mappings. Bukovinian Mathematical Journal. 2016, 2
AMA Style
Maslyuchenko VK, Myronyk OD. Sorgenfrey Line and Differentiated Continuous Mappings. Bukovinian Mathematical Journal. 2016; 2(1).
Chicago/Turabian Style
Volodymyr Kyrylovych Maslyuchenko, Oksana Dmytrivna Myronyk. 2016. "Sorgenfrey Line and Differentiated Continuous Mappings". Bukovinian Mathematical Journal. 2 no. 1.
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