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3.2

In propositions thoughts can be so expressed that to the objects of the thoughts correspond the elements of the propositional sign.

3.20

3.21

To the configuration of the simple signs in the propositional sign corresponds the configuration of the objects in the state of affairs.

3.22

In the proposition the name represents the object.

3.23

The postulate of the possibility of the simple signs is the postulate of the determinateness of the sense.

3.24

A proposition about a complex stands in internal relation to the proposition about its consituent part.

A complex can only be given by its description, and this will either be right or wrong. The propostion in which there is mention of a complex, if this does not exist, becomes not nonsense but simply false.

That a propositional element signifies a complex can be seen from an indeterminateness in the propositions in which it occurs. We know that everything is not yet determined by this proposition. (The notation for generality contains a prototype.)

The combination of the symbols of a complex in a simple symbol can be expressed by a definition.

3.25

There is one and only one complete analysis of the proposition.

3.26

The name cannot be analysed further by any definition. It is a primitive sign.