# Set Notation

Mind Map by sanyusu, updated more than 1 year ago
 Created by sanyusu about 6 years ago
35
1

### Description

Mind Map on Set Notation, created by sanyusu on 11/04/2015.

## Resource summary

Set Notation
1. set notation:
1. a collection of things
1. each item in a set is called an “element” or member
1. written in curly brackets { }
2. soccer = {alex, casey, drew} tennis = {drew, jade, hunter}
1. soccer u tennis = {alex, casey, drew, jade, hunter}
3. interval notation
1. ( ] → not including integer, is including integer
1. ( ) → not including integer
1. [ ] → is including integer
2. different notations:
1. numbers
1. N - natural numbers
1. Q - rational numbers
1. R - all rational/irrational numbers
1. Z - integers
2. unions, elements, subsets
1. unions
1. ∪ - union
1. ∩ intersection
2. elements
1. ∅ -null set, no elements
1. ∈ - is an element of
1. ∉ - belongs to
2. subsets:
1. ⊂ - is a proper subset
1. ⊄ - is not a proper subset
1. ⊆ - is a subset
1. ⊊ - is not a subset
2. extras:
1. ∶ and| - such that
1. ∴ - therefore
1. ∋ - contains
1. ∀ - for all
1. # -order or cardinality of a set
1. ∃ - there exists
1. A' or A∁ - complement of A
2. number lines:
1. o → hollow circle = doesn’t include the integer
1. • → filled in circle = includes integer
1. divide or multiply with - = flip the sign <>

### Similar

Biology : Basic Terms
Mechanics
Media Studies Quiz
Psychology Exam review
Biology Unit 1a - GCSE - AQA
Science Revision - Year 10
2_PSBD HIDDEN QUS By amajad ali
1PR101 2.test - Část 13.
EPISTEMOLOGÍA
Mezinárodní ekonomie 2SE221,2SE201 (1)