Symbol Cheat Sheet

Question 1

N (Fancy N)

Answer 1

Natural Numbers

Question 2

Z (Fancy Z)

Answer 2

Integers (Zählen)

Question 3

Q (Fancy Q)

Answer 3

Rational Numbers (Quoziente)

Question 4

R (Fancy R)

Answer 4

Real Numbers

Question 5

¬

Answer 5

Not, Negation

Question 6

∨

Answer 6

Or

Question 7

∧

Answer 7

And

Question 8

≡

Answer 8

Logically Equivalent

Question 9

|

Answer 9

Divides

Question 10

⇒

Answer 10

Implies

Question 11

⇔

Answer 11

If and Only If (iff)

Question 12

∈

Answer 12

In

Question 13

∈ (With dash through it)

Answer 13

Not In

Question 14

{ }, ∅

Answer 14

Empty Set

Question 15

∩

Answer 15

Intersection (Of Sets)

Question 16

∪

Answer 16

Union (Of Sets)

Question 17

S^c, S(bar)

Answer 17

Set Complement (With Respect to a Universe U)

Question 18

S - T

Answer 18

Set Difference

Question 19

S x T

Answer 19

Cartesian Product

Question 20

⊂

Answer 20

Subset

Question 21

⊆

Answer 21

Subset Or Equal

Question 22

⊆ (With dash through bar)

Answer 22

Proper / Strict Subset (Subset Not Equal)

Question 23

⊃

Answer 23

Contains

Question 24

⊇

Answer 24

Contains Or Equal

Question 25

⊇ (With dash through bar)

Answer 25

Properly / Strict Contains (Contains Not Equal)

Question 26

∀

Answer 26

For All

Question 27

∃

Answer 27

There Exists