Exercise on Predicate Logic

1. Creation of the World

Marthe´s Aufgabe

2. Formulae and their interpretation

a) Which of the following expressions of predicate logic are formulae? Give an explanation for your decision. If the expression is not a formula try to change it into one. To check your answer click on the single expressions.

• family dog

• blonde(Alice,Paul)

• father of someone(Alice,Lisa)

• tall(Alice)

• enjoy watching football together

For a general explanation of formulae Click here

b) Interpret the following formulae as true or false. If you have not defined these relations or properties in your World use the ones given in the World of task 1. See here. (Link zur Antwort) To check your answer click on the single formulae.

• father of someone(Paul,Lisa)

• blonde(Walter)

• enjoy watching football together(Alice,Tom)