CS Notation

Question 1

a collection of elements

Answer 1

{ } Set

Question 2

in A or B (or both)

Answer 2

A ∪ B Union

Question 3

in both A and B

Answer 3

A ∩ B Intersection:

Question 4

every element of A is in B.

Answer 4

A ⊆ B Subset:

Question 5

every element of A is in B,but B has more elements.

Answer 5

A ⊂ B Proper Subset:

Question 6

A is not a subset of B

Answer 6

A ⊄ B Not a Subset:

Question 7

A has same elements as B, or more

Answer 7

A ⊇ B Superset

Question 8

A has B’s elements and more

Answer 8

A ⊃ B Proper Superset:

Question 9

A is not a superset of B

Answer 9

A ⊅ B Not a Superset:

Question 10

elements not in A

Answer 10

A’ Complement:

Question 11

in A but not in B

Answer 11

A − B Difference or A \ B

Question 12

a is in A

Answer 12

a ∈ A Element of:

Question 13

b is not in A

Answer 13

b ∉ A Not element of:

Question 14

{}

Answer 14

Ø Empty set =

Question 15

set of all possible values(in the area of interest)

Answer 15

U Universal Set:

Question 16

all subsets of A

Answer 16

P(A) Power Set:

Question 17

both sets have the same members

Answer 17

A = B Equality:

Question 18

(set of ordered pairs from A and B)

Answer 18

A×B Cartesian Product

Question 19

the number of elements of set A

Answer 19

|A| Cardinality:

Question 20

Such that

Answer 20

| or :

or :

Question 21

For All

Answer 21

∀

Question 22

There Exists

Answer 22

∃

Question 23

Therefore

Answer 23

∴

Question 24

Divisible by

Answer 24

⋮

Question 25

All Positive integers and 0

Answer 25

N natural number

Question 26

Numbers that are not a fraction

Answer 26

Z integers

Question 27

Any fraction with non zero denominators

Answer 27

Q rational numbers

Question 28

Include rational numbers like positive and negative integers, fraction, and irrational numbers

Answer 28

R: real numbers

Question 29

Empty String

Answer 29

Λ

Question 30

To express that an element belongs to a set we use

Answer 30

∈

Question 31

To express that an element does NOT belong to a set we use

Answer 31

∉

Question 32

Collection of objects

Answer 32

Set

Question 33

Well defined, un ordered and distinct collection of elements

Answer 33

Sets

Question 34

each elements in the set satisfies a certain description

Answer 34

well dfined

Question 35

does not follow a certain order of appearance

Answer 35

unordered

Question 36

there could onyl be one item that has the element's characteristic across the set

Answer 36

Distinct

Question 37

the number of elements inside a set

Answer 37

Cardinality

Question 38

2 ways of defining a set

Answer 38

Formal and Informal

Question 39

Uses normal words, or enumeration to determine the members of a set

Answer 39

Informal definition

Question 40

Use mathematical symbols and statemetns through induction to define what constitutes a particular set

Answer 40

Formal definition

Question 41

Formal or informal: a = {1, 2, 3, 5}

Answer 41

informal

Question 42

Formal or Informal: A = {Dog, Cat, Turtle, Cow}

Answer 42

Informal

Question 43

Formal or informal: x = {2k + 1| k ∈ N}

Answer 43

Formal

Question 44

Formal or informal: D = {students of Math class}

Answer 44

informal

Question 45

The concept of formally defining sets is called??

Answer 45

Set builder notation

Question 46

Combines components of 2 different sets

Answer 46

Union

Question 47

Containing only the element that are common to bothsets mentioned

Answer 47

Intersection

Question 48

Consists of all elements that are not in the subjected set

Answer 48

Complement

Question 49

Set containing the element of the element in the left side not the right or the element of A not B.

Answer 49

Difference

Question 50

Set containing the elements that are in either set BUT NOT BOTH

Answer 50

Symmetric difference

Question 51

Symbol for Union

Answer 51

U

Question 52

Symbol for Intersection

Answer 52

∩

Question 53

Symbol of complement

Answer 53

'

Question 54

Symbol of difference

Answer 54

\ or -

Question 55

Symbol of symmetric difference

Answer 55

Δ