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Digital Companion to C. S. Peirce
‘Index’ (pub. 19.11.15-23:15). 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-foundations-mathematics-0.
Term: 
Index
Quote: 

The reference of a sign to its object is brought into special prominence in a kind of sign whose fitness to be a sign is due to its being in a real reactive relation, – generally, a physical and dynamical relation, – with the object. Such a sign I term an index.

Source: 
Peirce, C. S. (1904). On the Foundations of Mathematics. MS [R] 7.
References: 
MS [R] 7:15
Date of Quote: 
1904
URL: 

http://www.commens.org/dictionary/entry/quote-foundations-mathematics-0