Philosophy

Philosophy Quiz 10 Questions

1) Symbols list
You may use the list below to copy-and-paste symbols into your answer as needed.
?; ?; •; ~; ?; \; ?; $

Symbolize the following, using the scheme of abbreviation provided: There are at least two candidates for president. (Px: x is a candidate for president)

2) A relation R is symmetrical just in case if a bears R to b then b bears R to a.
Answer
True False

 

3) Symbols list
You may use the list below to copy-and-paste symbols into your answer as needed.
?; ?; •; ~; ?; \; ?; $

Symbolize this statement using the scheme of abbreviation provided: If everything is round then nothing is square. (Rx: x is round; Sx: x is square)

 

 

4) For Existential Instantiation, the constant we instantiate to may not occur earlier in our proof.
Answer
True False

 

5) The identity rule says that each thing is identical with itself.
Answer
True False

 

 

6) Symbols list
You may use the list below to copy-and-paste symbols into your answer as needed.
?; ?; •; ~; ?; \; ?; $

Symbolize this statement using the scheme of abbreviation provided: Some people don’t know when to quit. (Px: x is a person; Qx: x knows when to quit)

 

7) Quantifier negation is an equivalence rule.
Answer
True False

 

8. Logical equivalence is a symmetrical relation.
Answer
True False

 

9. Symbols list
You may use the list below to copy-and-paste symbols into your answer as needed.
?; ?; •; ~; ?; \; ?; $

Symbolize this statement using the scheme of abbreviation provided: Every living thing is our relation. (Lx: x is a living thing; Rx: x is our relation)

 

 

10. The correct symbolization of “Steve is not Aquaman” is s ¹ a (s: Steve; a: Aquaman).
Answer
True False

 

 

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