Mathematical set 2pcs

Got it! A mathematical set is a collection of distinct objects, considered as a single entity. These objects are called elements or members of the set.

Here are some basics:

1. Notation

• A set is usually denoted by a capital letter:
• Elements are listed inside curly braces:
  Example:
  — This means set A contains 1, 2, 3, and 4.

2. Set Types

• Finite set: Has a countable number of elements
  Example:
• Infinite set: Has uncountable elements
  Example:
• Empty set (null set): Has no elements
  Notation: or
• Subset: Set A is a subset of B if all elements of A are in B
  Notation:
• Universal set: Contains all objects under consideration
• Power set: The set of all subsets of a set

3. Common Set Symbols

• : "is an element of" (e.g., )
• : "is not an element of"
• : "is a subset of"
• : Union (combine sets)
• : Intersection (common elements)
• or : Difference (elements in one but not the other)

Would you like examples or help with specific set problems?