Propositional Logic. Sentence Restrictions. Precise use of natural language is difficult . Want a notation that is suited to precision . Restrict discussion to sentences that are: declarative either true or false but not both. Such sentences are called propositions.
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Which of the sentences below are propositions?
p implies q means that p causes q to be true.
If 1 1 then this class is fun.
Use a truth table to find the answer.
If berries are ripe along the trail, hiking is safe on the trail if and only if grizzly bears have not been seen in the area.