Orbits of hyperhypersimple sets and the lattice of Σ 0 3 sets

Publisher: Cambridge University Press

E-ISSN: 1943-5886|48|3|693-699

ISSN: 0022-4812

Source: The Journal of Symbolic Logic, Vol.48, Iss.3, 1983-09, pp. : 693-699

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Abstract