4.28 There correspond to these combinations the same number of
possibilities of truth--and falsity--for n elementary propositions.
4.3 Truth-possibilities of elementary propositions mean Possibilities of
existence and non-existence of states of affairs.
4.31 We can represent truth-possibilities by schemata of the following kind
('T' means 'true', 'F' means 'false'; the rows of 'T's' and 'F's' under the
row of elementary propositions symbolize their truth-possibilities in a way
that can easily be understood):
4.4 A proposition is an expression of agreement and disagreement with truth-
possibilities of elementary propositions.
4.41 Truth-possibilities of elementary propositions are the conditions of
the truth and falsity of propositions.
4.411 It immediately strikes one as probable that the introduction of
elementary propositions provides the basis for understanding all other
kinds of proposition. Indeed the understanding of general propositions
palpably depends on the understanding of elementary propositions.
4.42 For n elementary propositions there are ways in which a proposition
can agree and disagree with their truth possibilities.
4.43 We can express agreement with truth-possibilities by correlating the
mark 'T' (true) with them in the schema. The absence of this mark means
disagreement.
4.431 The expression of agreement and disagreement with the truth
possibilities of elementary propositions expresses the truth-conditions of
a proposition.
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