### Subtractive groupoids and TST-spaces

Volenec, Vladimir (1989)

Portugaliae mathematica

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Volenec, Vladimir (1989)

Portugaliae mathematica

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Jaroslav Ježek, Tomáš Kepka (1989)

Czechoslovak Mathematical Journal

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Polonijo, M. (1993)

Portugaliae mathematica

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Celakoska-Jordanova, Vesna (2010)

Mathematica Balkanica New Series

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AMS Subj. Classiﬁcation: 03C05, 08B20 Free algebras are very important in studying classes of algebras, especially varieties of algebras. Any algebra that belongs to a given variety of algebras can be characterized as a homomorphic image of a free algebra of that variety. Describing free algebras is an important task that can be quite complicated, since there is no general method to resolve this problem. The aim of this work is to investigate classes of groupoids, i.e. algebras...

Aleš Drápal, Jaroslav Ježek, T. Kepka (1997)

Acta Universitatis Carolinae. Mathematica et Physica

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Morgado, José (1967)

Portugaliae mathematica

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Ján Šipoš (1989)

Mathematica Slovaca

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