Geodesic
A new construction of non-constructible ${Δ^1}_3$ subset of ω
Fundamenta Mathematicae, Tome 81 (1973) no. 4, pp. 279-290.

Voir la notice de l'article provenant de la source Institute of Mathematics Polish Academy of Sciences

DOI : 10.4064/fm-81-4-279-290

Ronald Jensen 1 ; Håvard Johnsbråten 1

1 
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Ronald Jensen; Håvard Johnsbråten. A new construction of non-constructible ${Δ^1}_3$ subset of ω. Fundamenta Mathematicae, Tome 81 (1973) no. 4, pp. 279-290. doi : 10.4064/fm-81-4-279-290. http://geodesic.mathdoc.fr/articles/10.4064/fm-81-4-279-290/

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