The inference rule deals exclusively with formulas in conjunctive normal forms is called as :
Resolution rule
A formula in conjunctive normal form (CNF) is a conjunction of clauses, where each clause is a disjunction of literals.
The resolution rule works only on such clauses: from the clauses (P ∨ x) and (¬P ∨ y) it derives the resolvent (x ∨ y). Repeated resolution on a set of CNF clauses either produces the empty clause, proving the set unsatisfiable, or stops without it.
Because every premise and every conclusion of resolution is a clause, the rule deals exclusively with formulas in conjunctive normal form, and it is the basis of refutation theorem proving in propositional and first-order logic.
A contingency is a formula that is neither a tautology nor a contradiction, and unsatisfiability and contradiction are properties of formulas, not inference rules that operate on clauses.
Hence, Resolution rule.
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.................... is a client server application that identifies each host on the internet with a unique user-friendly name.
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(i) Kernel
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Codes:
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Which part of the QR code represents the encoded data?
