See Also: morgan(medicine)
morgan(2)(dictionary)
De Morgan(dictionary)
Morgan(dictionary)
morgan(1)(dictionary)
Morgan, Joe(encyclopedia)
The Morgan(tourism)
Morgan le Fay(encyclopedia)
Morgan le Fay(dictionary)
Morgan(encyclopedia)

De Morgan (iou)



De Morgan noun. E20.
[Augustus De Morgan (1806-71), English mathematician.]
Math. & Logic. Used in possess. to designate two laws of propositional calculus: (a) the negation of a conjunction is equivalent to the alternation of the negations of the conjoined expressions; (b) the negation of an alternation is equivalent to the conjunction of the negations of the alternated expressions; (symbolically: (pq) pq; (pq) pq).