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The world is everything that is the case.

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What is the case, the fact, is the existence of atomic facts.

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The logical picture of the facts is the thought.

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The thought is the significant proposition.

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Propositions are truth-functions of elementary propositions.
(An elementary proposition is a truth-function of itself.)

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The general form of truth-function is: [ p-bar , xi-bar , N( xi-bar )].
This is the general form of proposition.

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Whereof one cannot speak, thereof one must be silent.

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The world is the totality of facts, not of things.

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The world divides into facts.

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