Geodesic
Projections of relations
Mathematica Bohemica, Tome 120 (1995) no. 3, pp. 283-291

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MR Zbl
A projection of a relation is defined as a relation of reduced arity. The paper deals with projections of relations in coherence with their reflexivity, symmetry, completeness, regularity, cyclicity and other properties. Relationships between projections of hulls and hulls of projections are also studied.
A projection of a relation is defined as a relation of reduced arity. The paper deals with projections of relations in coherence with their reflexivity, symmetry, completeness, regularity, cyclicity and other properties. Relationships between projections of hulls and hulls of projections are also studied.
DOI : 10.21136/MB.1995.126001
Classification : 03E20, 04A05, 08A02
Keywords: relations of arbitrary arity; reflexivity; symmetry; antisymmetry; cyclicity; projection; hulls of relations; hulls of projections; $n$-decomposition; relation; diagonal; $(\Cal K, \varphi)$-modification; $(p)$-hull; $(q, X)$-projection 
Karásek, Jiří. Projections of relations. Mathematica Bohemica, Tome 120 (1995) no. 3, pp. 283-291. doi: 10.21136/MB.1995.126001
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