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  1. 9dqlvklqj% Ruho 6hwv.Kenneth Schilling - 1998 - Journal of Symbolic Logic 63 (1):262-268.
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    Louveau's Theorem for the Descriptive Set Theory of Internal Sets.Kenneth Schilling & Boško Živaljević - 1997 - Journal of Symbolic Logic 62 (2):595-607.
    We give positive answers to two open questions from [15]. (1) For every set C countably determined over A, if C is Π 0 α (Σ 0 α ) then it must be Π 0 α (Σ 0 α ) over A, and (2) every Borel subset of the product of two internal sets X and Y all of whose vertical sections are Π 0 α (Σ 0 α ) can be represented as an intersection (union) of Borel sets with (...)
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  3.  30
    Vanishing Borel Sets.Kenneth Schilling - 1998 - Journal of Symbolic Logic 63 (1):262-268.