Logic & Boolean Algebra

Negation

Negation reverses the truth value of a proposition.

Meaning

What Is Negation?

Negation reverses the truth value of a proposition.

Negation reverses the truth value of a proposition.

Examples

Examples of Negation

1If p is “x>0”, then ¬p is “x≤0”.
Understand

Formula and Key Points

Formula / rule
¬p
  • Know the definition and standard notation for Negation.
  • Be able to recognise or compute negation in a small example.
  • Connect the concept to nearby topics in the same subject before using it in larger CSE problems.
CSE Connection

Why This Matters in Computer Science

Used in program conditions, digital circuits, database queries, formal verification, search and decision logic.

FAQ

Negation: Frequently Asked Questions

What is Negation?

Negation reverses the truth value of a proposition.

Why is Negation useful in computer science?

Used in program conditions, digital circuits, database queries, formal verification, search and decision logic.