A. V. Kravchenko, M. V. Schwidefsky, “On nonstandard quasivarieties of differential groupoids and unary algebras”, Sib. Èlektron. Mat. Izv., 2022, Volume 19, Issue 2,Pages <nobr>768

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Mathematical logic, algebra and number theory

On nonstandard quasivarieties of differential groupoids and unary algebras

A. V. Kravchenko^ab, M. V. Schwidefsky^a

^a Sobolev Institute of Mathematics, pr. Koptyuga 4, 630090 Novosibirsk, Russia
^b Novosibirsk State University of Economics and Management, ul. Kamenskaya 56, 630099 Novosibirsk, Russia

Abstract: We prove that there are continuum many nonstandard quasivarieties of differential groupoids and unary algebras.

Keywords: quasivariety, nonstandard quasivariety, differential groupoid, unary algebra.

UDC: 512.57

MSC: 08C15, 03C05

Received June 20, 2022, published November 11, 2022

Language: English

DOI: 10.33048/semi.2022.19.064