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In this paper, we prove that the category of vacant $n$-tuple groupoids is equivalent to the category of factorizations of groupoids by $n$ factors that satisfy some Yang-Baxter type equation. Moreover we extend this equivalence to the category of maximally exclusive $n$-tuple groupoids, which we define, by dropping one assumption. The paper concludes by a note on how these results could tell us more about some Lie groups of interest.
@article{TAC_2013_28_a11, author = {Dany Majard}, title = {n-tuple groupoids and optimally coupled factorizations}, journal = {Theory and applications of categories}, pages = {304--331}, publisher = {mathdoc}, volume = {28}, year = {2013}, language = {en}, url = {http://geodesic.mathdoc.fr/item/TAC_2013_28_a11/} }
Dany Majard. n-tuple groupoids and optimally coupled factorizations. Theory and applications of categories, Tome 28 (2013), pp. 304-331. http://geodesic.mathdoc.fr/item/TAC_2013_28_a11/