An early work primarily on the intension and extension of terms which was superseded by "Upon Logical Comprehension and Extension" (G-1867-1e). Definition of "logic." Connotation, denotation, and information. The relationship of comprehension, extension, and implication summed up in the formula: Extension x comprehension = implication. Forms of induction and hypothesis.
Comprehension, logical (see also Connotation), Connotation (see also Comprehension), Denotation (see also Comprehension Connotation), Extension logical, Hypothesis (see also Abduction Induction), Implication, Induction, Information (see also Predicate), Intension, Logic (modal see Modality), Psychology