LOGIC (MS 339-1009)
The attempts to define "logic" suffer from an admixture of logic, anthropology, and psychology. Analysis of the triad of thing, representation, and form. The three kinds of representations: signs, copies, symbols. Conditions to which symbols are subject. The relationship between the syllogism and scientific inference. The proper form of induction. Induction and hypothesis distinguished. Induction increases the extension of subject; hypothesis increases the comprehension of predicate. Moreover, induction discovers a law which is a prohibition; hypothesis discovers a law which is an imposition.
Copies, Form, Hypothesis (see also Abduction; Induction), Induction and hypothesis, Logic (modal see Modality), University Lectures (of ), Representation (see also Meaning; Sign; Thirdness), logic of Science, Sign(s), Syllogism and scientific inference, Symbol, Thing
pp. 1-14 (double pages)
LOGIC / UNIVERSITY LECTURES 1865