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MA1511/logic.tex

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+\input{decls.tex}
+\title{Essential Logic}
+\begin{document}
+\maketitle
+\begin{description}
+\item[Statement] Something which is either \emph{true} or \emph{false} \\
+Often dependent on variables from some universe; labelled $P$, $Q$, ...
+\end{description}
+\section*{Logical Connectives}
+\begin{description}
+\item[$\neg P$] NOT
+\item[$P \land Q$] Conjunction / AND
+\item[$P \lor Q$] Disjunction / OR
+\item[$P \implies Q$] Implication / IF
+\item[$P \iff Q$] IFF
+\item[Contrapositive of $P \implies Q$:] $\neg Q \implies \neg P$ \\
+	$\neg Q \implies \neg P \equiv P \implies Q \quad\forall P, Q$
+\end{description}
+\end{document}