Descriptive Set Theory and Forcing: How to Prove Theorems about Borel Sets the Hard Way
(Book #4 in the Lecture Notes in Logic Series)
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Book Overview
An advanced graduate course. Some knowledge of forcing is assumed, and some elementary Mathematical Logic, e.g. the Lowenheim-Skolem Theorem. A student with one semester of mathematical logic and 1 of set theory should be prepared to read these notes. The first half deals with the general area of Borel hierarchies. What are the possible lengths of a Borel hierarchy in a separable metric space? Lebesgue showed that in an uncountable complete separable metric space the Borel hierarchy has uncountably many distinct levels, but for incomplete spaces the answer is independent. The second half includes Harrington's Theorem - it is consistent to have sets on the second level of the projective hierarchy of arbitrary size less than the continuum and a proof and appl- ications of Louveau's Theorem on hyperprojective parameters.
Format:Paperback
Language:English
ISBN:3540600590
ISBN13:9783540600596
Release Date:September 1995
Publisher:Springer
Length:133 Pages
Weight:0.45 lbs.
Dimensions:0.3" x 6.1" x 9.2"
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