 Duality

Duality may refer to:
Contents
Mathematics
 Duality (mathematics), a mathematical concept
 Dual (category theory), a formalization of mathematical duality
 Duality (order theory), a concept regarding binary relations
 Duality (projective geometry), general principle of projective geometry
 Sduality (homotopy theory)
 Dual problem
 List of dualities (Mathematics)
Philosophy, logic, and psychology
 Dualism, a twofold division in several spiritual, religious, and philosophical doctrines
 Dualism (philosophy of mind), where the body and mind are considered to be irreducibly distinct
 De Morgan's Laws, specifically the ability to generate the dual of any logical expression.
Science
Electrical and mechanical
 Duality (electrical circuits), regarding isomorphism of electrical circuits
 Duality (mechanical engineering), regarding isomorphism of some mechanical laws
Physics
 AdS/CFT correspondence, (anti de Sitter/conformal field theory correspondence), sometimes called the Maldacena duality
 Dual resonance model
 Duality (electricity and magnetism)
 Englert–Greenberger duality relation
 Holographic duality
 Kramers–Wannier duality
 List of dualities (physics)
 Mirror symmetry
 Montonen–Olive duality
 Mysterious duality
 String duality is a class of symmetries
Titles
Film
 Duality (film), a Star Wars fan film by Dave Macomber and Mark Thomas
Music
 Duality (Lisa Gerrard & Pieter Bourke album), a 1998 album by Lisa Gerrard and Pieter Bourke
 Duality (song), a 2004 single & Grammynominated song by metal band Slipknot
 Duality (Ra album), a 2005 album by the rock band Ra
 Duality, a 2007 single from alternative rock/punk band Bayside
Other
 Duality, a large format audio mixing console by Solid State Logic
 Duality (CoPs) refers to the notion of a duality in a Community of Practice
 Dual (grammatical number) grammatical number that some languages use in addition to singular and plural
See also
 Double (disambiguation)
 Dual (disambiguation)
 Duality principle (disambiguation)
 List of dualities: Philosophy, Mathematics, Physics and Engineering
 Nondualism (Philosophy)
 Triality (Mathematics)
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