Anna Jameson,North Westand
There is a special form for boolean formulas called "Conjunctive Normal Form" (CNF). A problem in this form consists of clauses connected with and operators, where each clause only contains variables connected with or operators. The variables can appear negated, but only variables can be directly negated, something like !(a && b) is not allowed. An example boolean formula in CNF form is:
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What is Blockchain Decentralization?Blockchain technology is safe, even if it’s public. People can access the technology using an internet connection.
"itemsRemoved": [，这一点在同城约会中也有详细论述
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