Set Symbols

Question 1

𝑥 ∈ 𝑆

Answer 1

𝑥 is a member of 𝑆

Question 2

𝑥 ∉ 𝑆

Answer 2

𝑥 is not a member of 𝑆

Question 3

{𝑎1,…,𝑎𝑛}

Answer 3

List of elements of a set

Question 4

{𝑥|𝑃(𝑥)}

Answer 4

Set builder notation

Question 5

N

Answer 5

Set of natural numbers

Question 6

Z

Answer 6

Set of integers

Question 7

Z+

Answer 7

Set of positive integers

Question 8

Q

Answer 8

Set of rational numbers

Question 9

R

Answer 9

Set of real numbers

Question 10

S = T

Answer 10

Set equality

Question 11

Ø

Answer 11

The empty (or null) set

Question 12

𝑆⊆𝑇

Answer 12

𝑆 is a subset of 𝑇

Question 13

𝑆⊂𝑇

Answer 13

𝑆 is a proper subset of 𝑇

Question 14

|𝑆|

Answer 14

Cardinality of 𝑆

Question 15

𝑃(𝑆)

Answer 15

The power set of 𝑆

Question 16

(𝑎1,…,𝑎𝑛)

Answer 16

n-tuple

Question 17

(𝑎,𝑏)

Answer 17

Ordered pair

Question 18

𝐴 x 𝐵

Answer 18

Cartesian product of 𝐴 and 𝐵

Question 19

𝐴 ∪ 𝐵

Answer 19

Union of 𝐴 and 𝐵

Question 20

𝐴 ∩ 𝐵

Answer 20

Intersection of 𝐴 and 𝐵

Question 21

𝐴 – 𝐵

Answer 21

The difference of 𝐴 and 𝐵

Question 22

𝐴

Answer 22

Complement of 𝐴

Question 23

⋃ni-1𝐴𝑖

Answer 23

Union of𝐴𝑖,𝑖 = 1,2 ,…,𝑛

Question 24

⋂𝑛𝑖=1𝐴𝑖

Answer 24

Intersection of 𝐴𝑖,𝑖 = 1,2 ,…,𝑛

Question 25

𝐴 ⊕ 𝐵

Answer 25

Symmetric difference of 𝐴 and 𝐵