# Set Notation

Detailed description of Set Notation, what each piece of notation means.

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• Created by: Tiula
• Created on: 29-04-10 20:43

## Set Notation

A = set A B = set B

A N B Elements in both Set A and Set B

A U B Elements in Set A or Set B or both

A ' Elements not in Set A

(A U B) ' Elements not in Set A or B or both

A N B ' Elements in Set A and not in Set B

n (A) Number of elements in Set A

A C B Set A is contained inside Set B (Set A is a subset of B)

A = {x:x>5} The elements in Set A are >5

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## Groups of Numbers

N Natural numbers - positive integers

Z Integers (positive and negative)

Q Rational numbers - any number that can be expressed as a fraction

R Real numbers - anything, for example pi

C Imaginary numbers, for example the sq rt of -1

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thank you!!!

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you saved my life!!!

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thankyouuu! :) great! None of this is in my revision guide! hehe, I'm taking my igcses this year :O && I'm a completely clueless in EVERY topic. thankyouu doll! :) **

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LEGEND!!

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N instead of intersection symbol. not useful.

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