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Multiple generality

FOL symbolizations with nested and mixed quantifiers, where the order of universal and existential quantifiers changes what a sentence says.

forall x: Calgary, Multiple generality

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4 exercises

Exercise A

Using this symbolization key:

  • domain:

    all animals

  • A(x)A(x):

    ‾x\underline{\hskip 15.00002pt}_{x} is an alligator

  • M(x)M(x):

    ‾x\underline{\hskip 15.00002pt}_{x} is a monkey

  • R(x)R(x):

    ‾x\underline{\hskip 15.00002pt}_{x} is a reptile

  • Z(x)Z(x):

    ‾x\underline{\hskip 15.00002pt}_{x} lives at the zoo

  • L(x,y)L(x,y):

    ‾x\underline{\hskip 15.00002pt}_{x} loves ‾y\underline{\hskip 15.00002pt}_{y}

  • aa:

    Amos

  • bb:

    Bouncer

  • cc:

    Cleo

symbolize each of the following sentences in FOL:

  1. If Cleo loves Bouncer, then Bouncer is a monkey.

  2. If both Bouncer and Cleo are alligators, then Amos loves them both.

  3. Cleo loves a reptile.

  4. Bouncer loves all the monkeys that…

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Exercise B

Using the following symbolization key:

  • domain:

    all animals

  • D(x)D(x):

    ‾x\underline{\hskip 15.00002pt}_{x} is a dog

  • S(x)S(x):

    ‾x\underline{\hskip 15.00002pt}_{x} likes samurai movies

  • L(x,y)L(x,y):

    ‾x\underline{\hskip 15.00002pt}_{x} is larger than ‾y\underline{\hskip 15.00002pt}_{y}

  • rr:

    Rave

  • hh:

    Shane

  • dd:

    Daisy

symbolize the following sentences in FOL:

  1. Rave is a dog who likes samurai movies.

  2. Rave, Shane, and Daisy are all dogs.

  3. Shane is larger than Rave, and Daisy is larger than Shane.

  4. All dogs like samurai movies.

  5. Only dogs like samurai movies.

  6. T…

3.0

Exercise D

Using the following symbolization key:

  • domain:

    people and dishes at a potluck

  • R(x)R(x):

    ‾x\underline{\hskip 15.00002pt}_{x} has run out

  • T(x)T(x):

    ‾x\underline{\hskip 15.00002pt}_{x} is on the table

  • F(x)F(x):

    ‾x\underline{\hskip 15.00002pt}_{x} is food

  • P(x)P(x):

    ‾x\underline{\hskip 15.00002pt}_{x} is a person

  • L(x,y)L(x,y):

    ‾x\underline{\hskip 15.00002pt}_{x} likes ‾y\underline{\hskip 15.00002pt}_{y}

  • ee:

    Eli

  • ff:

    Francesca

  • gg:

    the guacamole

symbolize the following English sentences in FOL:

  1. All the food is on the table.

  2. If the guacamole has not run out, then it is on the table.

  3. Everyone likes the guacamole.

  4. If anyone likes the guacam…

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Exercise E

Using the following symbolization key:

  • domain:

    people

  • D(x)D(x):

    ‾x\underline{\hskip 15.00002pt}_{x} dances ballet

  • F(x)F(x):

    ‾x\underline{\hskip 15.00002pt}_{x} is female

  • M(x)M(x):

    ‾x\underline{\hskip 15.00002pt}_{x} is male

  • C(x,y)C(x,y):

    ‾x\underline{\hskip 15.00002pt}_{x} is a child of ‾y\underline{\hskip 15.00002pt}_{y}

  • S(x,y)S(x,y):

    ‾x\underline{\hskip 15.00002pt}_{x} is a sibling of ‾y\underline{\hskip 15.00002pt}_{y}

  • ee:

    Elmer

  • jj:

    Jane

  • pp:

    Patrick

symbolize the following sentences in FOL:

  1. All of Patrick’s children are ballet dancers.

  2. Jane is Patrick’s daughter.

  3. Patrick has a daughter.

  4. Jane is an only child.

  5. All of Patrick’s sons dance ballet.

  6. Patrick has no…

3.0

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.