Tractatus Logico-Philosophicus · Chapter
5.2341 explained
The sense of a truth-function of p is a function of the sense of p.
What happens
The sense of a truth-function of p is a function of the sense of p. Denial, logical addition, logical multiplication, etc., are operations; denial reverses the sense of a proposition.
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Narrative arc
Story tension across the book.
- Setup
- Escalation
- Breaking point
- Aftermath
- Closing
This passage marks the story’s dramatic climax because it presents the moment when the protagonist’s obsessive…
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Follow the arc while readingThemes in this chapter
- Logic and Tautology
Discusses truth-functions and logical operations as fundamental to the structure of propositions.
Characters to notice
- Mr. Wittgenstein
Author of the proposition
Key passages
“The sense of a truth-function of p is a function of the sense of p.”
The meaning of a compound proposition formed from p depends on the meaning of p itself.
Clarifies the dependency of truth-functional meaning on the base proposition.
“Denial, logical addition, logical multiplication, etc., etc., are operations. (Denial reverses the sense of a proposition.)”
Logical connectives like negation, disjunction, and conjunction are operations; for example, negation flips the truth of a proposition.
Defines logical operations and illustrates with negation.
