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

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INDEX

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)
194