# Article

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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
Summary:
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.
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