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A formula is in conjunctive normal form (CNF) if it is a conjunction of clauses, where a clause is a disjunction of literals.

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Prove that every to $\varphi_n$ equivalent formula in DNF has at least $2^n$ conjunctive cla...

Your approach is a valid approach, but I don't see how one could finish that argument. So instead, I'll give you my idea. Let's look at one (satisfiable) clause $c_k$ from the minimal DNF. How many t …
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