Dual or Duals may refer to:

Paired/two things

  • Dual (mathematics), a notion of paired concepts that mirror one another
  • Dual (category theory), a formalization of mathematical duality
  • see more cases in :Category:Duality (mathematics)
  • Dual number, a number system used in automatic differentiation
  • Dual (grammatical number), a grammatical category used in some languages
  • Dual county, a Gaelic games county which competes in both Gaelic football and hurling
  • Dual diagnosis, a psychiatric diagnosis of co-occurrence of substance abuse and a mental problem
  • Dual fertilization, simultaneous application of a P-type and N-type fertilizer
  • Dual impedance, electrical circuits that are the dual of each other
  • Dual SIM cellphone supporting use of two SIMs
  • Aerochute International Dual a two-seat Australian powered parachute design

Acronyms and other uses

  • Dual (brand), a manufacturer of Hifi equipment
  • DUAL (cognitive architecture), an artificial intelligence design model
  • DUAL algorithm, or diffusing update algorithm, used to update Internet protocol routing tables
  • Dual language, alternative spelling of the Australian Aboriginal Dhuwal language
  • DUAL table, a special one-row and one-column database table
  • Dual-Ghia, US-brand of luxury-car of the late 1950s

Media

  • Dual (2008 film), a 2008 western drama film
  • Dual (2022 film), a 2022 science fiction thriller film
  • "Dual" (Heroes), an episode of Heroes
  • Dual! Parallel Trouble Adventure, an anime series
  • Dual (album), an album of traditional Scottish and Irish music recorded by Éamonn Doorley, Muireann Nic Amhlaoibh, Julie Fowlis and Ross Martin, released 2008
  • Dual (EP), a 2013 EP by Sampha
  • Duals, an album by U2
  • The Duals, American duo
  • Dual (brand), brand name of audio and video electronics.

People

  • Duall (c.1795 – c.1840), an Indigenous Australian outlaw and explorer

See also

  • Duality (disambiguation)
  • Duel (disambiguation), a homonym
  • Double (disambiguation)
  • Duo (disambiguation)
  • Pair (disambiguation)
  • Twin (disambiguation)