Lexic.us

Definition of Duality

1. Noun. Being twofold; a classification into two opposed parts or subclasses. "The dichotomy between eastern and western culture"

2. Noun. (physics) the property of matter and electromagnetic radiation that is characterized by the fact that some properties can be explained best by wave theory and others by particle theory.

3. Noun. (geometry) the interchangeability of the roles of points and planes in the theorems of projective geometry.

Definition of Duality

1. n. The quality or condition of being two or twofold; dual character or usage.

Definition of Duality

1. Noun. A classification into two subclasses or opposed parts. ¹

2. Noun. (context: projective geometry) The interchangeability of points and planes. ¹

3. Noun. (mathematics physics) The mathematical equivalence of two seemingly different theoretical descriptions of a physical system. ¹

¹ Source: wiktionary.com

Definition of Duality

1. the state of being twofold [n -TIES]

Lexicographical Neighbors of Duality

dualies dualin dualins dualise dualised dualises dualising dualism dualisms dualist

dualistic dualistic development dualistically dualists dualities duality (current term) dualizability dualizable dualization dualize

dualized dualizes dualizing dualled dualling dually duals duan duans

Literary usage of Duality

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Principles of Mathematics by Bertrand Russell (1903)
"A few words may be added concerning the principle of duality. ... Such a duality, as we saw in Chapter XLIV, belongs always to «-dimensional series as such. ..."

2. Shaker Sermons: Scripto-rational. Containing the Substance of Shaker by Harvey L. Eads (1879)
"I am aware that we are believed to hold to the dogma of duality in Deity, male and female. It is repugnant to reason it. But I will try to clear this point. ..."

3. A History of European Thought in the Nineteenth Century by John Theodore Merz (1903)
"The 28. principle of duality is now usually denned to mean that duality, in geometry on the plane or in space, " figures coexist in pairs, ..."

4. Synthetic Projective Geometry by George Bruce Halsted (1906)
"CORRELATION AND duality. 41. Two figures are called ' correlated' when every element of ... In Analytic Geometry the principle of duality consists in the ..."

5. A Treatise on the Theory of Alternating Currents by Alexander Russell (1904)
"The method of duality. Ohm's law. Series and parallel. Capacity and inductance. Flux and quantity. Inductive coil and leaky condenser. ..."

6. Projective Geometry by Oswald Veblen, John Wesley Young (1910)
"The principle of duality. It is in order to exhibit the theorem of duality as clearly as possible that we have introduced the symmetrical, if not always ..."

Other Resources: