Page:Wittgenstein - Tractatus Logico-Philosophicus, 1922.djvu/198

Rh Expressions — continued
 * guarantee existence of the logical place, 3.4

have meaning only in a proposition, 3.314 (1)
 * presented by a variable, 3.313 (1)
 * the proposition is a function of them, 3.318
 * the term defined, 3.31 (1)

External property, 2.01231, 2.0233. (See also Internal property)

"Fact", a formal concept, 4.1272 (7, 8)

Facts (Tatsache). (See also States of affairs and Atomic facts)
 * and pictures, 2.1, 2. 11
 * compose the world, i.i, 1.2
 * existence of, 2
 * mutual independence of, 1.21
 * negative, 2.06 (2)
 * required for expression of sense, 3.142
 * the world divides into, 1.2
 * totality of, 1.11

Fate, and the ancients, 6.372 (1)

Feature, explained, 4.1221

Features of symbols, express formal properties, 4.125 (6)

Form. (See also Possibility)
 * and possibility of structure, 2.033
 * and substance, 2.025
 * cannot be said to have properties, 4. 1 241
 * general, of propositions, 4.5, 4.47
 * general prepositional,
 * and truth operations, 5.54
 * is a variable, 4.53
 * logical, 2.18. (See also Prototype)
 * and variable, 3.315
 * cannot be represented in proposition, 4.12, 4.121 (1)
 * how determined by a sign, 3.327
 * of propositions, 4.0031
 * of a spot, 4.063
 * of expressions, 3.31 (4)
 * shown by substitutability, 6.23 (2)
 * of functions, 3.333 (2)
 * of objects, 2.0141, 2.0233, 2.0251
 * of propositions, 3.311
 * of reality, 2.18
 * of representation
 * defined, 2.151
 * function of, in pictures, 2.22
 * is shown forth, 2.172
 * of the world consists of objects 2.022-3
 * of values of a variable, 4.1271 (2)

Formal, equated with logical 6.12 (1)

Formal concept
 * already given with object to which it applies, 4.12721
 * as primitive idea, 4.12721
 * characteristics of, 4.126 (5, 7)
 * defined, 4.126 (1)
 * examples of, 4.1272 (7, 8)
 * expressed by variables, 4.126 (8), 4.127
 * opposed to "proper" concept, 4.126 (2)
 * questions about existence of,
 * senseless, 4.127

Formal law, as determining formal series, 5.501 (6)

Formal properties
 * connexion with structure, 5.321
 * explained, 4.122 (1)
 * expressed by features of symbols, 4.126 (6)

Formal series
 * defined, 4.1252 (1)

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