Characterization of Carathéodory functions
Abstract
We study Carathéodory functions f: D→Y , where (T, 𝓣) is a measurable space, X, Y are metric spaces and D ⊂ T×X. In the case when 𝓣 is complete and Y is a separable Banach space, we give a characterization of such functions.
Keywords
Carathéodory function; extension; measurable selection
References
2. Brown L., Schreiber B.M., Approximation and extension of random functions, Monatsh. Math. 107 (1989), 111–123.
3. Christensen J.P.R., Topology and Borel Structures, North Holland, Amsterdam, 1974.
4. DeBlasi F.S., Myjak J., On the random Dugundji extension theorem, J. Math. Anal. Appl. 128 (1987), 305–311.
5. Himmelberg C.J., Measurable relations, Fund. Math. 87 (1975), 53–72.
6. Kechris A.S., Classical Descriptive Set Theory, Springer-Verlag, New York, 1994.
7. Kucia A., Extending Carathéodory functions, Bull. Polish Acad. Sci. Math. 36 (1988), 593–601.
8. Kucia A., Some results on Carathéodory selections and extensions, J. Math. Anal. Appl. 223 (1998), 302–318.
9. Kuratowski K., Topology, Vol. II, Academic Press, New York, 1968.
10. Wagner D.H., Survey of measurable selection theorems, SIAM J. Control 15 (1977), 859–903.
11. Wagner D.H., Survey of measurable selection theorems: an update , in: Measure Theory, Oberwolfach 1979, Lecture Notes in Math., 794, Springer, Berlin–New York, 1980, pp. 176–219.
Instytut Matematyki, Uniwersytet Śląski w Katowicach Poland
The Copyright Holders of the submitted text are the Author and the Journal. The Reader is granted the right to use the pdf documents under the provisions of the Creative Commons 4.0 International License: Attribution (CC BY). The user can copy and redistribute the material in any medium or format and remix, transform, and build upon the material for any purpose.
- License
This journal provides immediate open access to its content under the Creative Commons BY 4.0 license (http://creativecommons.org/licenses/by/4.0/). Authors who publish with this journal retain all copyrights and agree to the terms of the above-mentioned CC BY 4.0 license. - Author’s Warranties
The author warrants that the article is original, written by stated author/s, has not been published before, contains no unlawful statements, does not infringe the rights of others, is subject to copyright that is vested exclusively in the author and free of any third party rights, and that any necessary written permissions to quote from other sources have been obtained by the author/s. - User Rights
Under the Creative Commons Attribution license, the users are free to share (copy, distribute and transmit the contribution) and adapt (remix, transform, and build upon the material) the article for any purpose, provided they attribute the contribution in the manner specified by the author or licensor. - Co-Authorship
If the article was prepared jointly with other authors, the signatory of this form warrants that he/she has been authorized by all co-authors to sign this agreement on their behalf, and agrees to inform his/her co-authors of the terms of this agreement.