Opuscula Math. 36, no. 4 (2016), 481-488
http://dx.doi.org/10.7494/OpMath.2016.36.4.481
Opuscula Mathematica
On the Baire classification of continuous mappings defined on products of Sorgenfrey lines
Abstract. We study the Baire measurability of functions defined on \(\mathbb{R}^T\) which are continuous with respect to the product topology on a power \(\mathbb{S}^T\) of Sorgenfrey lines.
Keywords: Baire-one function, Sorgenfrey line, equiconnected space.
Mathematics Subject Classification: 26A21, 54C05.
- W. Bade, Two properties of the Sorgenfrey plane, Pacif. J. Math. (1971), 349-354.
- T. Banakh, (Metrically) quarter-stratifiable spaces and their applications, Math. Stud. 18 (2002) 2, 10-28.
- R. Engelking, Theory of Dimensions, Finite and Infinite. Revised and Completed Edition, Heldermann Verlag, Lemgo, 1995.
- O. Karlova, V. Maslyuchenko, V. Mykhaylyuk, Equiconnected spaces and Baire classification of separately continuous functions and their analogs, Cent. Eur. J. Math. 10 (2012) 3, 1042-1053.
- O. Karlova, V. Mykhaylyuk, Functions of the first Baire class with values in metrizable spaces, Ukr. Math. J. 58 (2006) 4, 567-571 [in Ukrainian].
- S. Mazur, On continuous mappings on Cartesian products, Fund. Math. 39 (1952), 229-238.
- S. Mrówka, Some problems related to \(N\)-compact spaces, preprint.
- Olena Karlova
- Chernivtsi National University, Faculty of Mathematics and Informatics, Department of Mathematical Analysis, Kotsyubyns'koho str., 2, Chernivtsi, Ukraine
- Olga Fodchuk
- Chernivtsi National University, Faculty of Mathematics and Informatics, Department of Mathematical Analysis, Kotsyubyns'koho str., 2, Chernivtsi, Ukraine
- Communicated by P.A. Cojuhari.
- Received: 2015-08-26.
- Revised: 2016-01-26.
- Accepted: 2016-01-28.
- Published online: 2016-04-01.