@misc{Lexicon of Arguments, title = {Quotation from: Lexicon of Arguments – Concepts - Ed. Martin Schulz, 28 Mar 2024}, author = {Logic Texts}, subject = {Descriptions}, note = {Read III 127f Improper name/Quine: (= descriptions- only real names allow the substitution that can be found in the indistinguishability of identical. Improper names: lead to more complex form: E.g. "among the Roman orators there is a major one, and he denounced Catiline that". E.g. "Just one number counts the planets and it is more than seven"/Russell: here is only 7 a real name - hence these sentences may not be sentences in a conclusion of the principle of indistinguishability of the identical. >Leibniz principle, >Identity, >Indistinguishability, QuineVs:. problem : range: the marks must be eliminated, so that in the new wording no part corresponds with them. >Range, >Scope, >Narrow/wide. - - - Strobach I 104 Indistinguishability/Strobach: requires Logic of the 2nd level: predicate logic 2nd level/PL2/Strobach: typical formula: Leibniz's Law: "x = y > (Fx ↔ Fy)". >Second order logic.}, note = { Re III St. Read Thinking About Logic: An Introduction to the Philosophy of Logic. 1995 Oxford University Press German Edition: Philosophie der Logik Hamburg 1997 Stro I N. Strobach Einführung in die Logik Darmstadt 2005 }, file = {http://philosophy-science-humanities-controversies.com/listview-details.php?id=238476} url = {http://philosophy-science-humanities-controversies.com/listview-details.php?id=238476} }