Isomorphism types of the hyperarithmetic sets ${\bf H}_a$.
Nelson, George C.
Notre Dame J. Formal Logic, Tome 19 (1978) no. 1, p. 1-19 / Harvested from Project Euclid
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Publié le : 1978-01-14
Classification:  02F35 
@article{1093888204,
     author = {Nelson, George C.},
     title = {Isomorphism types of the hyperarithmetic sets ${\bf H}\_a$.},
     journal = {Notre Dame J. Formal Logic},
     volume = {19},
     number = {1},
     year = {1978},
     pages = { 1-19},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1093888204}
}

Nelson, George C. Isomorphism types of the hyperarithmetic sets ${\bf H}_a$.. Notre Dame J. Formal Logic, Tome 19 (1978) no. 1, pp.  1-19. http://gdmltest.u-ga.fr/item/1093888204/