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<p>DNF of the e.g. formula  has  conjunctions.</p>

<p><big>Computational complexity</big></p>
<p>The <a href="page.php?w=Boolean_satisfiability_problem">Boolean satisfiability problem</a> on <a href="page.php?w=conjunctive_normal_form">conjunctive normal form</a> formulas is <a href="page.php?w=NP-completeness">NP-complete</a>. By the <a href="page.php?w=duality_principle_%28Boolean_algebra%29">duality principle</a>, so is the falsifiability problem on DNF formulas. Therefore, it is <a href="page.php?w=co-NP-hard">co-NP-hard</a> to decide if a DNF formula</p><p>
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