Geodesic
On the Finsler and Doner-Tarski Arithmetical Hierarchies.
Commentarii mathematici Helvetici, Tome 44 (1969), pp. 89-92.

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Mots-clés : set theory 
@article{CMH_1969__44_139384,
     author = {Hilbert Levitz},
     title = {On the {Finsler} and {Doner-Tarski} {Arithmetical} {Hierarchies.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {89--92},
     publisher = {mathdoc},
     volume = {44},
     year = {1969},
     zbl = {0177.01501},
     url = {http://geodesic.mathdoc.fr/item/CMH_1969__44_139384/}
}
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%T On the Finsler and Doner-Tarski Arithmetical Hierarchies.
%J Commentarii mathematici Helvetici
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%F CMH_1969__44_139384
Hilbert Levitz. On the Finsler and Doner-Tarski Arithmetical Hierarchies.. Commentarii mathematici Helvetici, Tome 44 (1969), pp. 89-92. http://geodesic.mathdoc.fr/item/CMH_1969__44_139384/