Multiple generality
FOL symbolizations with nested and mixed quantifiers, where the order of universal and existential quantifiers changes what a sentence says.
4 exercises
Exercise A
Using this symbolization key:
- domain:
all animals
- :
is an alligator
- :
is a monkey
- :
is a reptile
- :
lives at the zoo
- :
loves
- :
Amos
- :
Bouncer
- :
Cleo
symbolize each of the following sentences in FOL:
-
If Cleo loves Bouncer, then Bouncer is a monkey.
-
If both Bouncer and Cleo are alligators, then Amos loves them both.
-
Cleo loves a reptile.
-
Bouncer loves all the monkeys that…
Exercise B
Using the following symbolization key:
- domain:
all animals
- :
is a dog
- :
likes samurai movies
- :
is larger than
- :
Rave
- :
Shane
- :
Daisy
symbolize the following sentences in FOL:
-
Rave is a dog who likes samurai movies.
-
Rave, Shane, and Daisy are all dogs.
-
Shane is larger than Rave, and Daisy is larger than Shane.
-
All dogs like samurai movies.
-
Only dogs like samurai movies.
-
T…
Exercise D
Using the following symbolization key:
- domain:
people and dishes at a potluck
- :
has run out
- :
is on the table
- :
is food
- :
is a person
- :
likes
- :
Eli
- :
Francesca
- :
the guacamole
symbolize the following English sentences in FOL:
-
All the food is on the table.
-
If the guacamole has not run out, then it is on the table.
-
Everyone likes the guacamole.
-
If anyone likes the guacam…
Exercise E
Using the following symbolization key:
- domain:
people
- :
dances ballet
- :
is female
- :
is male
- :
is a child of
- :
is a sibling of
- :
Elmer
- :
Jane
- :
Patrick
symbolize the following sentences in FOL:
-
All of Patrick’s children are ballet dancers.
-
Jane is Patrick’s daughter.
-
Patrick has a daughter.
-
Jane is an only child.
-
All of Patrick’s sons dance ballet.
-
Patrick has no…
Adapted from forall x: Calgary © 2025 P. D. Magnus, Tim Button, Robert Trueman, and Richard Zach. Licensed under CC BY 4.0. Source: forall x: Calgary. Imported at revision ec34df8.