id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
3r074t66b55	Rebecca Weber	A definable relation between c.e. sets and ideals	2004		.txt	text/plain	147	7	53	[N, 2^omega] for N nonprincipal, and a quotient structure of G, denoted G^diamond and thought of as G modulo principal classes disjoint from N. Using the setting of computably enumerable ideals, we present basic results for G and G^diamond and show that G^diamond is isomorphic to E*, the lattice of computably enumerable sets modulo finite difference. Related to the study of properties of individual classes is the study of the lattice of all Pi-0-1 classes, denoted E_Pi.	cache/3r074t66b55.txt	txt/3r074t66b55.txt