 ##  [Law of Noncontradiction](/law-noncontradiction) 

  ##  [Law of Noncontradiction](https://natural.quantumdictionary.io/law-noncontradiction-0) 

  

 [![Natural & Formal Sciences Dictionary](/sites/default/files/styles/large/public/2026-01/Natural%20%26%20Formal%20Sciences.png.webp?itok=2kCDRVQv)](/topic-specific-dictionaries/natural-formal-sciences)



**Natural &amp; Formal Sciences Dictionary**

 







 

 

 

 



 

 

 

 

Definition

The logical principle that no proposition can be both true and false at the same time in the same sense; it prohibits holding a statement and its negation simultaneously as true within the same interpretive frame.

 

 

 

 

 





 

 



 ##  [Law of Noncontradiction](https://mathlogic.quantumdictionary.io/law-noncontradiction-1) 

  

 [![Mathematics & Logic Dictionary](/sites/default/files/styles/large/public/2026-01/Mathematics%20%26%20Logic.png.webp?itok=UhtTRPnp)](/topic-specific-dictionaries/natural-formal-sciences/mathematics-logic)

- Natural &amp; Formal Sciences -

**Mathematics &amp; Logic Dictionary**

 







 

 

 

 



 

 

 

 

Definition

The logical principle that no proposition can be both true and false at the same time and in the same respect; formally it forbids a formula A and its negation ¬A from both holding under a single interpretation.