Replace ~ with \sim
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		@@ -356,8 +356,8 @@ the resulting statement is true. If both are false, then the resulting
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statement is also false.
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					statement is also false.
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Any statement can have its truth value inverted by applying *not* to
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					Any statement can have its truth value inverted by applying *not* to
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it. If we have a true statement $P$, $~P$ is false.  If we have a
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					it. If we have a true statement $P$, $\sim P$ is false.  If we have a
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false statement $Q$, $~Q$ is true.
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					false statement $Q$, $\sim Q$ is true.
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**Conditional Statements**
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					**Conditional Statements**
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