Abstract
As we pointed out in chapter 1, structural dependence is a relation between aspects, and aspects will be represented here by systems of relationals. In this chapter we will introduce the notion of a relational in detail. A relational is a representation of the ordinary language notion of relation and we shall use it in connections with aspects, rather than the usual set-theoretical representation of a relation as a set of ordered n-tuples. Formally a relational is a function which takes sets as arguments and sets of ordered n-tuples as values. The values of a relational are thus relations in the set-theoretical sense. The basic idea is that the value of the relational for a set is the extension on this set of the relation which the relational represents.
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© 1992 Springer-Verlag Berlin Heidelberg
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Odelstad, J. (1992). Relationals. In: Invariance and Structural Dependence. Lecture Notes in Economics and Mathematical Systems, vol 380. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-48388-2_3
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DOI: https://doi.org/10.1007/978-3-642-48388-2_3
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-55260-4
Online ISBN: 978-3-642-48388-2
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