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8 lines
582 B
8 lines
582 B
\item \self Given the formula $\phi$ with the variables $x_1, ..., x_n$. Tick all statements that are true.
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\begin{itemize}
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\item[$\square$] A \textit{literal} is a variables $x_i$ or its negation.
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\item[$\square$] A \textit{literal} forms a formula in conjunctive normal form.
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\item[$\square$] A \textit{literal} forms a formula in disjunctive normal form.
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\item[$\square$] A \textit{literal} is called \textit{positive}, if it is the negation of a variable.
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\item[$\square$] A \textit{literal} is called \textit{negative}, if it is the negation of a variable.
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\end{itemize}
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