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Arithmetical <Emphasis Type="Italic">D</Emphasis>-degrees |
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| Authors: | S Yu Podzorov |
| Institution: | (1) Sobolev Institute of Mathematics, Novosibirsk, Russia |
| Abstract: | |
| Keywords: | arithmetical hierarchy m-reducibility distributive join semilattice Lachlan semilattice numbering Rogers semilattice |
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