| Issue |
RAIRO-Theor. Inf. Appl.
Volume 37, Number 2, April/June 2003
|
|
|---|---|---|
| Page(s) | 105 - 113 | |
| DOI | https://doi.org/10.1051/ita:2003016 | |
| Published online | 15 November 2003 | |
On the Topological Complexity of Infinitary Rational Relations
Équipe de Logique Mathématique,
U.F.R. de Mathématiques, Université Paris-7, 2 place Jussieu, 75251
Paris
Cedex 05, France;
finkel@logique.jussieu.fr.
Received:
October
2002
Accepted:
May
2003
We prove in this paper that there exists some infinitary rational relations which are analytic but non Borel sets, giving an answer to a question of Simonnet [20].
Mathematics Subject Classification: 68Q45 / 03D05 / 03D55 / 03E15
Key words: Infinitary rational relations / topological properties / Borel and analytic sets.
© EDP Sciences, 2003
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