de Morgan,s Laws
المؤلف:
Dugundji, J
المصدر:
Topology. Englewood Cliffs, NJ: Prentice-Hall, 1965.Halmos, P. R. Naive Set Theory. New York: Springer-Verlag, 1974.
الجزء والصفحة:
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20-2-2022
1636
de Morgan's Laws
Let 
represent "or", 
represent "and", and 
represent "not." Then, for two logical units 
and 
,
These laws also apply in the more general context of Boolean algebra and, in particular, in the Boolean algebra of set theory, in which case 
would denote union, 
intersection, and 
complementation with respect to any superset of 
and 
.
REFERENCES
Dugundji, J. Topology. Englewood Cliffs, NJ: Prentice-Hall, 1965.Halmos, P. R. Naive Set Theory. New York: Springer-Verlag, 1974.
Kelley, J. L. General Topology. New York: Springer-Verlag, 1975.
Papoulis, A. Probability, Random Variables, and Stochastic Processes, 2nd ed. New York: McGraw-Hill, p. 23, 1984.
Simpson, R. E. Introductory Electronics for Scientists and Engineers, 2nd ed. Boston, MA: Allyn and Bacon, pp. 540-541, 1987.
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