Logic & Boolean Algebra

De Morgan’s Laws

De Morgan’s laws describe how negation distributes over AND and OR operations.

Meaning

What Is De Morgan’s Laws?

De Morgan’s laws describe how negation distributes over AND and OR operations.

De Morgan’s laws describe how negation distributes over AND and OR operations.

Examples

Examples of De Morgan’s Laws

1NOT(A AND B) = NOT A OR NOT B.
Understand

Formula and Key Points

Formula / rule
¬(p∧q)=¬p∨¬q; ¬(p∨q)=¬p∧¬q
  • Know the definition and standard notation for De Morgan's Laws.
  • Be able to recognise or compute de morgan's laws 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

De Morgan’s Laws: Frequently Asked Questions

What is De Morgan's Laws?

De Morgan’s laws describe how negation distributes over AND and OR operations.

Why is De Morgan's Laws useful in computer science?

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