Relation construction

From Wikinfo

In logic and mathematics, relation construction and relational constructibility have to do with the ways that one relation is determined by an indexed family or a sequence of other relations, called the relation dataset. The relation in the focus of consideration is called the faciendum. The relation dataset typically consists of a specified relation over sets of relations, called the constructor, the factor, or the method of construction, plus a specified set of other relations, called the faciens, the ingredients, or the makings.

Relation composition and relation reduction are special cases of relation constructions.

Examples

See also

• Projection
• Relation
• Relation composition
• Relation reduction
• Tacit extension

External links

• Adapted from the Wikipedia article, "Relation_construction" http://en.wikipedia.org/wiki/Relation_construction, used under the GNU Free Documentation License.