2022-04-23 13:26:53 +01:00
|
|
|
---
|
2024-06-16 18:30:03 +01:00
|
|
|
tags:
|
|
|
|
|
- logic
|
|
|
|
|
- propositional-logic
|
2022-04-23 13:26:53 +01:00
|
|
|
---
|
|
|
|
|
|
2022-12-25 16:00:05 +00:00
|
|
|
# Negation Elimination
|
|
|
|
|
|
2024-02-17 11:57:44 +00:00
|
|
|
Like the [introduction](Negation_Introduction.md) rule for
|
2024-02-02 15:58:13 +00:00
|
|
|
negation, the elimination rule also works by deriving a contradiction. It is
|
|
|
|
|
basically _Negation Introduction_ in reverse. Instead of starting the sub-proof
|
|
|
|
|
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.
|
2022-12-25 16:00:05 +00:00
|
|
|
|
2024-02-16 16:14:01 +00:00
|
|
|
|
