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 :Duality theories * Dual (grammatical number), a grammatical category used in some languages * Dual county, a Gaelic games county which 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), ''Dual'' (2008 film), a 2008 western drama film * Dual (2022 film), ''Dual'' (2022 film), a 2022 science fiction thriller film * Dual (Heroes), "Dual" (''Heroes''), an episode of ''Heroes'' * Dual! Parallel Trouble Adventure, an anime series * Dual (album), ''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), ''Dual'' (EP), a 2013 EP by Sampha * ''Duals'', an album by U2 * The Duals, American duo

Paired/two things

Acronyms and other uses

Media

See also