A selector principle for \(\Sigma^1_1\) equivalence relations (Q1233873)

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scientific article; zbMATH DE number 3540816
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A selector principle for \(\Sigma^1_1\) equivalence relations
scientific article; zbMATH DE number 3540816

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    A selector principle for \(\Sigma^1_1\) equivalence relations (English)
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    1977
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