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9 months ago
  1. \item \self Use the DPLL algorithm with \textit{Boolean Constrain Propagation} and \textit{Pure Literals} (\emph{without} clause learning) to determine whether or not the set of clauses given is satisfiable. Decide variables in alphabetical order starting with the \textit{positive} phase. If the set of clauses resulted in \texttt{SAT}, give a satisfying model.
  2. \begin{dpllCNFInput}
  3. \item $(\lnot c \lor d)$
  4. \item $(a \lor \lnot d \lor \lnot e )$
  5. \item $(b \lor \lnot c)$
  6. \item $(c \lor e)$
  7. \item $(\lnot b \lor \lnot c)$
  8. \item $(a \lor b)$
  9. \end{dpllCNFInput}
  10. % (not c or d) and (a or not d or not e) and (b or not c) and (c or e) and (not b or not c) and (a or b)