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VII: 03, 33-35, LNM 321 (1973)
Un crible généralisé (Descriptive set theory)
Given a Borel set $A$ in the product $E\times F$ of two compact metric sets, the set of all $x\in E$ such that the section $A(x)\subset Y$ is of second category is analytic
Comment: The authour discovered later that the main result is in fact due to Novikov: two references are given in 1252
Keywords: Analytic sets
Nature: Original
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