Geodesic
On strong regularity of relations
Mathematica Bohemica, Tome 119 (1994) no. 2, pp. 151-155.

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There exists a natural extension of the notion of preorder from binary relations onto relations whose arities are arbitrary ordinals. In the article we find a condition under which extended preorders coincide with preorders if viewed categorically.
DOI : 10.21136/MB.1994.126076
Classification : 03E20, 04A05, 08A02
Keywords: relations of type $\alpha$; reflexivity; diagonality; strong regularity; homomorphism; extended preorders 
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Šlapal, Josef. On strong regularity of relations. Mathematica Bohemica, Tome 119 (1994) no. 2, pp. 151-155. doi : 10.21136/MB.1994.126076. http://geodesic.mathdoc.fr/articles/10.21136/MB.1994.126076/

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