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This used to be a redirect to analytical hierarchy, but that doesn't make any sense because analytical is a lightface notion whereas analytic is boldface. I'm planning a pointclass page and possibly a separate projective hierarchy page; the current page might merge into one of those --Trovatore 8 July 2005 06:02 (UTC)

I think this page needs a disambiguation, separating the concepts forma Logic and from Algebraic Geometry. Coffeebrake60 (talk) —Preceding undated comment added 08:34, 8 February 2014 (UTC) ^x[reply]

Possibly. What concept from algebraic geometry? --Trovatore (talk) 08:58, 8 February 2014 (UTC)[reply]