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Digital Companion to C. S. Peirce
‘Line of Identity’ (pub. 18.03.18-15:32). Quote in M. Bergman & S. Paavola (Eds.), The Commens Dictionary: Peirce's Terms in His Own Words. New Edition. Retrieved from http://www.commens.org/dictionary/entry/quote-syllabus-certain-topics-logic-25.
Term: 
Line of Identity
Quote: 

A heavily marked line without any sort of interruption (though its extremity may coincide with a point otherwise marked) shall, under the name of a line of identity, be a graph, subject to all the conventions relating to graphs, and asserting precisely the identity of the individuals denoted by its extremities.

Source: 
Peirce, C. S. (1903). A Syllabus of Certain Topics of Logic. Boston: Alfred Mudge & Son.
References: 
Peirce, 1903, p. 18; CP 4.406
Date of Quote: 
1903
URL: 

http://www.commens.org/dictionary/entry/quote-syllabus-certain-topics-logic-25