Boolean Logic

Invented George Boole (Cork 19th Century)

Boolean was useless until the advent of computers

Boolean Symbols

Symbol	Definition
==	is equal to
!=	not equal to
<	less than
>	greater than
<=	less than or equal
>=	greater than or equal

Boolean Logic Given

True or False

true=True
print(true)

Megan = 16
Cathal = 16
Iustina = 17
Matthew = 17
Aine = 35
print(Aine > Cathal)
print(Megan < Aine)
print(Matthew > Iustina)
print(Matthew >= Iustina)
print(Cathal != Megan)

---

event a

event b

and

a and b

True + True = True

or

a or b

True + False = True

False + True = True

not

a and not b

True + False = True

b and not a

False + True = True

Megan = 16
Cathal = 16
Iustina = 17
Matthew = 17
Aine = 35
one = (Cathal > Aine) #False
two = (Aine > Cathal) #this answer is True
three = (Matthew > Iustina) #False
four = (Matthew >= Iustina) #True

print(one and two)
print(two or three)
print(four and not two)
print(two and four)
print(two and not three)
print(one and two and three)
print(one or two or four)
print(three or not one)