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 Mat. Zametki, Forthcoming paper (Mi mz12753)

Brief Communications

On the relation of equality modulo countable

V. G. Kanovei, V. A. Lyubetskii

Institute for Information Transmission Problems of the Russian Academy of Sciences (Kharkevich Institute), Moscow

Abstract: We prove that the relation of equality modulo countable, restricted to the domain of sets simultaneously $F_\sigma$ and $G_\delta$, admits an effective choice of a representative in every equivalence class.

Keywords: equality modulo countable, effective choice

 Funding Agency Grant Number Russian Foundation for Basic Research 18-29-13037

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