8 lines
536 B
Markdown
8 lines
536 B
Markdown
---
|
|
categories:
|
|
- Logic
|
|
tags: [propositional-logic]
|
|
---
|
|
|
|
|
|
Like the [introduction](Negation%20Elimination.md) rule for negation, the elimination rule also works by deriving a contradiction. It is basically *Negation Introduction* in reverse. Instead of starting the subproof with a true proposition from which you derive a contradiction, you start with the negation of a proposition, derive a contradiction and then assert the positive of the negated proposition you started out with.
|