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JOURNALS // Funktsional'nyi Analiz i ego Prilozheniya // Archive

Funktsional. Anal. i Prilozhen., 2023 Volume 57, Issue 4, Pages 89–99 (Mi faa4159)

This article is cited in 2 papers

Free topological algebra with separately continuous Mal'tsev operation

O. V. Sipacheva, A. A. Solonkov

Lomonosov Moscow State University, Faculty of Mechanics and Mathematics

Abstract: Topological spaces with separately continuous Mal'tsev operation, called quasi-Mal'tsev spaces, are considered. The existence of the free quasi-Mal'tsev space generated by an arbitrary completely regular Hausdorff space is proved. It is shown that any quasi-Mal'tsev space is a quotient of a free quasi-Mal'tsev space. It is also shown that the topology of a free quasi-Mal'tsev space has a simple and natural description in terms of the generating space. Finally, it is proved that any completely regular Hausdorff quasi-Mal'tsev space is a retract of a quasi-topological group.

Keywords: Mal'tsev operation, quasi-Mal'tsev space, free quasi-Mal'tsev space, quasi-topological group.

Received: 15.09.2023
Revised: 27.09.2023
Accepted: 29.09.2023

DOI: 10.4213/faa4159


 English version:
Functional Analysis and Its Applications, 2023, 57:4, 337–345

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© Steklov Math. Inst. of RAS, 2026