R. M. Friedberg. The fine structure of degrees of unsolvability of recursively enumerable sets. Summaries of talks presented at the Summer Institute for Symbolic Logic, Cornell University, 1957, 2nd edn., Communications Research Division, Institute for Defense Analyses, Princeton, N.J., 1960, pp. 404–406.

1963 ◽  
Vol 28 (2) ◽  
pp. 166-166 ◽  
Author(s):  
Gerald E. Sacks
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