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Algebra Logika, 2019 Volume 58, Number 6, Pages 706–713 (Mi al924)
This article is cited in 2 papers

The $d$-rank of an $\alpha$-space does not exceed $1$

Yu. L. Ershov

Sobolev Institute of Mathematics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk

Abstract: It is proved that the $d$-rank of an arbitrary $\alpha$-space does not exceed $1$.

Keywords: $\alpha$-space, $d$-rank.

UDC: 515.125

Received: 14.01.2019
Revised: 12.02.2020

DOI: 10.33048/alglog.2019.58.602


 English version: Algebra and Logic, 2020, 58:6, 470–474

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© Steklov Math. Inst. of RAS, 2025