|Operators, logic: operators are symbols for performing a function, e.g. and; or; if; then; etc._____________Annotation: The above characterizations of concepts are neither definitions nor exhausting presentations of problems related to them. Instead, they are intended to give a short introduction to the contributions below. – Lexicon of Arguments. |
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logical operators / Wessel: e.g. and, not, or, all, some, "the fact that", "the non-fact that" ..- Termini / Terms / Wessel: e.g "the fact that metals conduct electricity ’"H2O", "brother and sister", "divisible by three" ... - no terms are: and, all, in, or, "the earth revolves around the sun".
Operator / Wessel: must not occur more than once in provable formulas of propositional logic -
(Operator / (s): (e.g. subjunction) does not lead to paradoxes, because it is not "predicated of something" like predicates (implication) - ((s) Operator / (s): rather purely formal - in contrast: predicate: content)._____________Explanation of symbols: Roman numerals indicate the source, arabic numerals indicate the page number. The corresponding books are indicated on the right hand side. ((s)…): Comment by the sender of the contribution.
Logik Berlin 1999