Abstract.
We prove that there are precisely six equational theories E of groupoids with the property that every term is E-equivalent to a unique linear term.
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Received November 11, 2004; accepted in final form March 12, 2006.
The first and third authors were supported by the Ministry of Science and Environment of Serbia, grant no. 144011; the second and fifth authors were supported by MŠMT, research project MSM 0021620839, and by the Grant Agency of the Czech Republic, grant #201/02/0594; the fourth author was supported by the NSF grant #DMS-0245622.
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Ðapić, P., Ježek, J., Marković, P. et al. Star-linear equational theories of groupoids. Algebra univers. 56, 357–397 (2007). https://doi.org/10.1007/s00012-007-2007-3
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DOI: https://doi.org/10.1007/s00012-007-2007-3