## The theory of the degrees below 0 (1981)

by
Richard A. Shore

Venue: | J. London Math. Soc |

Citations: | 18 - 6 self |

### BibTeX

@ARTICLE{Shore81thetheory,

author = {Richard A. Shore},

title = {The theory of the degrees below 0},

journal = {J. London Math. Soc},

year = {1981},

volume = {24},

pages = {1--14}

}

### Years of Citing Articles

### OpenURL

### Abstract

Degree theory, that is the study of the structure of the Turing degrees (or degrees of unsolvability) has been divided by Simpson [24; §5] into two parts—global and local. By the global theory he means the study of general structural properties of 3d— the degrees as a partially ordered set or uppersemilattice. The local theory concerns