T
F
F
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F
F
T
T
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T
T
F
T
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T
F
A proposition is the expression of agreement and disagreement with the truth-possibilities of the elementary propositions.
The truth-possibilities of the elementary propositions are the conditions of the truth and falsehood of the propositions.
It seems probable even at first sight that the introduction of the elementary propositions is fundamental for the comprehension of the other kinds of propositions. Indeed the comprehension of the general propositions depends palpably on that of the elementary propositions.
With regard to the agreement and disagreement of a proposition with the truth-possibilities of n elementary propositions there are ∑K=0Kn(KnK)=Ln possibilities.
Agreement with the truth-possibilities can be expressed by coordinating with them in the schema the mark “T” (true).
Absence of this mark means disagreement.
The expression of the agreement and disagreement with the truth-possibilities of the elementary propositions expresses the truth-conditions of the proposition.