13 lines
		
	
	
	
		
			168 B
		
	
	
	
		
			Markdown
		
	
	
	
	
	
			
		
		
	
	
			13 lines
		
	
	
	
		
			168 B
		
	
	
	
		
			Markdown
		
	
	
	
	
	
---
 | 
						|
tags:
 | 
						|
  - propositional-logic
 | 
						|
  - logic
 | 
						|
---
 | 
						|
 | 
						|
# Law of Non-Contradiction
 | 
						|
 | 
						|
> A proposition cannot be true and false at the same time.
 | 
						|
 | 
						|
$$
 | 
						|
\lnot (P \land  \lnot P)
 | 
						|
$$
 |