# 5.2341 explained — Tractatus Logico-Philosophicus

> Chapter companion for Tractatus Logico-Philosophicus by Ludwig Wittgenstein.

## 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.

## Themes in this chapter

### Logic and Tautology

Discusses truth-functions and logical operations as fundamental to the structure of propositions.

## Character check-ins

### Mr. Wittgenstein

Author of the proposition

## Key lines

> 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._

## Links

- HTML: https://www.betterreads.online/discover/tractatus_logico_philosophicus_se/chapters/5-2341
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- All chapters: https://www.betterreads.online/discover/tractatus_logico_philosophicus_se/chapters