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noun
1.
a dual state or quality.
2.
Mathematics. a symmetry within a mathematical system such that a theorem remains valid if certain objects, relations, or operations are interchanged, as the interchange of points and lines in a plane in projective geometry.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Duality
is always a great word to know.
So is quotient. Does it mean:
| the result of division; the number of times one quantity is contained in another |
| a symbol or number placed above and after another symbol or number to denote the power to which the latter is to be raised |
Example Sentences
- Zurbaran painted with an acute sense of a duality between the world of flesh and blood and the world of the spirit.
- But what's really happening is the struggle of duality.
- But that duality of spirit is the nature of homesteading.
Collins
World English Dictionary
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History
duality
c.1400, from Fr. dualité (14c.), from L.L. dualitas, from dualis (see dual).
Online Etymology Dictionary, © 2010 Douglas Harper
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Encyclopedia Britannica
Encyclopedia
duality
in mathematics, principle whereby one true statement can be obtained from another by merely interchanging two words. It is a property belonging to the branch of algebra known as lattice theory, which is involved with the concepts of order and structure common to different mathematical systems. A mathematical structure is called a lattice if it can be ordered in a specified way (see order). Projective geometry, set theory, and symbolic logic are examples of systems with underlying lattice structures, and therefore also have principles of duality.
Learn more about duality with a free trial on Britannica.com.
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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