C.S. Peirce • “On the Natural Classification of Arguments” (1867)
The formula of analogy is as follows:
are taken at random from such a class that their characters at random are such as
Such an argument is double. It combines the two following:
Owing to its double character, analogy is very strong with only a moderate number of instances.
(Peirce, CP 2.513, CE 2, 46–47)
Figure 7 shows the logical relationships involved in the above analysis.
- Logic Syllabus
- Boolean Function
- Boolean-Valued Function
- Logical Conjunction
- Minimal Negation Operator
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