Tutorial Contents Tutorial Two: Propositional Calculus: Language - Truth Functors - The Propositional
Language
- "Implicate" -
Stand-alone sentences - Scope
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Exercise 2.3

 

1.

In each of the following, say whether the second sentence is an acceptable translation of the first. (If it isn't, think of situation in which the sentences would have different truth-values.)
  (i) No one is perfect. ¬someone is perfect.
  (ii) Socrates is not wise. ¬Socrates is wise.
  (iii) Somebody isn't telling the truth. ¬somebody is telling the truth.
  (iv) You may not look. ¬you may look
  (v) You must not look. ¬you must look
  (vi) I don't think he is coming. ¬I think he is coming.
  (vii) Peter has not stopped beating his wife. ¬Peter has stopped beating his wife.
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