Question

De Morgan Law 4

20 Feb 2018
Answer :
Word Count : 307

De Morgan's laws are a pair of transformation rules that are both valid rules of inference. They are named after Augustus De Morgan, a 19th-century British mathematician. The rules allow the expression of conjunctions and disjunctions purely in terms of each other via negation.

The rules can be expressed in English as:

the negation of a disjunction is the conjunction of the negations; and

the negation of a conjunction is the disjunction of the negations;

or

the complement of the union of two sets is the same as the intersection of their

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