Definitions [2]
Definition: Set
A set is a well-defined collection of distinct objects or elements.
- Example 1: A collection of books.
- Example 2: A group of students
Definition: Cardinality
Cardinality refers to the number of distinct elements in a set.
It is denoted by n(A)
- The cardinal number of the empty set is 0.
- The cardinal number of an infinite set is not defined
Key Points
Key Points: Venn Diagram
| Logical Form | Set Form |
|---|---|
| p ∧ q | A ∩ B |
| p ∨ q | A ∪ B |
| ∼p | A′ (complement) |
| p → q | A ⊂ B |
| p ↔ q | A = B |
