Logic Symbols

Question 1

x [with “–” above x]

1. Symbol Name?
2. Meaning/Definition
3. Example

Answer 1

x [with "–" above x]
1. Symbol Name? 
bar
2. Meaning/Definition 
not - negation
3. Example 
x [with "–" above x]

Question 2

⋅

1. Symbol Name?
2. Meaning/Definition
3. Example

Answer 2

⋅
1. Symbol Name? 
and
2. Meaning/Definition 
and
3. Example 
x ⋅ y

Question 3

1. Symbol Name?
2. Meaning/Definition
3. Example

Answer 3

^
1. Symbol Name? 
caret / circumflex
2. Meaning/Definition 
and
3. Example 
x ^ y

Question 4

&

1. Symbol Name?
2. Meaning/Definition
3. Example

Answer 4

&
1. Symbol Name? 
ampersand
2. Meaning/Definition 
and
3. Example 
x & y

Question 5

+

1. Symbol Name?
2. Meaning/Definition
3. Example

Answer 5

\+
1. Symbol Name? 
plus
2. Meaning/Definition 
or
3. Example 
x + y

Question 6

∨

1. Symbol Name?
2. Meaning/Definition
3. Example

Answer 6

∨
1. Symbol Name? 
reversed caret
2. Meaning/Definition 
or
3. Example 
x ∨ y

Question 7

|

1. Symbol Name?
2. Meaning/Definition
3. Example

Answer 7

1. Symbol Name? 
vertical line
2. Meaning/Definition 
or
3. Example 
x | y

Question 8

x’

1. Symbol Name?
2. Meaning/Definition
3. Example

Answer 8

x'
1. Symbol Name? 
single quote
2. Meaning/Definition 
3. Example

Question 9

¬

1. Symbol Name?
2. Meaning/Definition
3. Example

Answer 9

¬
1. Symbol Name? 
not
2. Meaning/Definition 
not - negation
3. Example 
¬x

Question 10

!

1. Symbol Name?
2. Meaning/Definition
3. Example

Answer 10

!
1. Symbol Name? 
exclamation mark
2. Meaning/Definition 
not - negation
3. Example 
! x

Question 11

⊕

1. Symbol Name?
2. Meaning/Definition
3. Example

Answer 11

⊕
1. Symbol Name? 
circled plus / oplus
2. Meaning/Definition 
exclusive or - xor
3. Example 
x ⊕ y

Question 12

~

1. Symbol Name?
2. Meaning/Definition
3. Example

Answer 12

~
1. Symbol Name? 
tilde
2. Meaning/Definition 
negation
3. Example 
~x

Question 13

⇒

1. Symbol Name?

Answer 13

⇒
1. Symbol Name?
implies

Question 14

⇔

1. Symbol Name?
2. Meaning/Definition

Answer 14

⇔
1. Symbol Name? 
equivalent
2. Meaning/Definition 
if and only if (iff)

Question 15

↔

1. Symbol Name?
2. Meaning/Definition

Answer 15

↔
1. Symbol Name? 
equivalent
2. Meaning/Definition 
if and only if (iff)

Question 16

∀

1. Symbol Name?

Answer 16

∀
1. Symbol Name?
for all

Question 17

∃

1. Symbol Name?

Answer 17

∃
1. Symbol Name?
there exists

Question 18

∄

1. Symbol Name?

Answer 18

∄
1. Symbol Name?
there does not exist

Question 19

∴

1. Symbol Name?

Answer 19

∴
1. Symbol Name?
therefore

Question 20

∵

1. Symbol Name?

Answer 20

∵
1. Symbol Name?
because / since