Wadge Degrees

Some articles on wadge degrees, wadge, degree:

Wadge Hierarchy - Wadge Degrees
... is Wadge reducible to or ≤W if there is a continuous function on ωω with ... The Wadge order is the preorder or quasiorder on the subsets of Baire space ... Equivalence classes of sets under this preorder are called Wadge degrees, the degree of a set is denoted by W ...

Famous quotes containing the word degrees:

    By degrees we may come to know the primitive sense of the permanent objects of nature, so that the world shall be to us an open book, and every form significant of its hidden life and final cause.
    Ralph Waldo Emerson (1803–1882)