Re: http://intersci.ss.uci.edu/wiki/index.php/Relation_theory
The article on k-adic relations deals with a higher level of generality than we usually need for triadic relations and sign relations, but it does provide a theoretical context for discussing the latter special cases and it illustrates many of the concepts, constructions, and operations that are used in mathematics, logic, and computer science to work with relations.
The article also distinguishes two type of definitions for relations that are commonly used and frequently confused. Mathematicians and programmers would likely recognize this as the difference between strongly typed and weakly typed definitions while linguists and logicians might refer to it as the difference between contextualized and decontextualized definitions.
Regards, Jon -- academia: http://independent.academia.edu/JonAwbrey my word press blog: http://inquiryintoinquiry.com/ inquiry list: http://stderr.org/pipermail/inquiry/ isw: http://intersci.ss.uci.edu/wiki/index.php/JLA oeiswiki: http://www.oeis.org/wiki/User:Jon_Awbrey facebook page: https://www.facebook.com/JonnyCache
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