|WikiProject Mathematics||(Rated Start-class, Low-priority)|
This is leading up to the definition of the prewellordering property and its consequences for pointclasses that have it (reduction for the pointclass, separation for the dual pointclass). At a minimum, there first needs to be a pointclass page.
Fairly complete now--main problem is the redlinks. The pointclass page I want to put together would have considerable overlap with analytical hierarchy, but the latter is seriously flawed by a lack of a lightface/boldface distinction, and by its conflation of formulas with pointsets (this conflation is fairly routine in a context where it's understood, but it isn't sufficiently explained on the existing page) --Trovatore 7 July 2005 20:01 (UTC)
need pics for Reduction and Separation properties. For the latter I don't really want an analogue of Moschovakis' Figure 4B1; I'd rather have one that shows separation of two disjoint sets in Γ. --Trovatore 16:27, 7 September 2005 (UTC)
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Apparently it does, I changed it.--Patrick 09:48, 17 June 2007 (UTC)