Geodesic
On the Equivalence of Borel Sets
Matematičeskie zametki, Tome 112 (2022) no. 1, pp. 83-87 Cet article a éte moissonné depuis la source Math-Net.Ru

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A theorem on the existence of a definable selector for the relation $E_{\aleph_0}$ on the $\boldsymbol{\Delta}^0_2$-sets of the Baire space $\omega^\omega$ is proved.
Keywords: $\boldsymbol{\Delta}^0_2$-set, selector, equality modulo a countable set. 
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S. V. Medvedev. On the Equivalence of Borel Sets. Matematičeskie zametki, Tome 112 (2022) no. 1, pp. 83-87. http://geodesic.mathdoc.fr/item/MZM_2022_112_1_a7/

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