TY - BOOK AU - Epstein,Richard L. TI - Initial segments of degrees below 0' T2 - Memoirs of the American Mathematical Society, SN - 9781470406486 (online) AV - QA3QA9.6 .A57 no. 241 U1 - 510 s511.3 19 PY - 1981/// CY - Providence, R.I. PB - American Mathematical Society KW - Recursion theory N1 - "Volume 30 ... (second of 3 numbers)."; Includes index; Bibliography: p. 101; 1. $\vdots \overset {*}{\Rightarrow } \mathbb {D}(\le \mathbf {0}')$; 2. $\omega + 1 \overset {*}{\Rightarrow } \mathbb {D}(\le \mathbf {0}')$; 3. The join technique below high r.e. degrees; 4. Joins and $\omega + 1 \overset {*}{\Rightarrow } \mathbb {D}(\le \mathbf {0}')$; Appendix A. Arithmetic $\equiv \mathcal {D}(\le \mathbf {0}')$; Appendix B. Corrections to "Degrees of Unsolvability" and to "Minimal Degrees"; Access is restricted to licensed institutions; Electronic reproduction; Providence, Rhode Island; American Mathematical Society; 2012 UR - http://www.ams.org/memo/0241 UR - http://dx.doi.org/10.1090/memo/0241 ER -