Cardinality is the number of elements in a finite set.
What Is Cardinality?
Cardinality is the number of elements in a finite set.
Examples of Cardinality
1
|{a,b,c}| = 3.Formula and Key Points
Formula / rule
|A|
- Know the definition and standard notation for Cardinality.
- Be able to recognise or compute cardinality in a small example.
- Connect the concept to nearby topics in the same subject before using it in larger CSE problems.
Why This Matters in Computer Science
Used in databases, data structures, automata, logic, query operations, permissions and discrete mathematics.
Related Math Terms
Cardinality: Frequently Asked Questions
What is Cardinality?
Cardinality is the number of elements in a finite set.
Why is Cardinality useful in computer science?
Used in databases, data structures, automata, logic, query operations, permissions and discrete mathematics.