Dual

Look up dual in Wiktionary, the free dictionary.

Dual may refer to:

• 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 theories
• Dual (grammatical number), a grammatical category used in some languages
• Duality (electrical circuits)
• 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 (cognitive architecture), an artificial intelligence design model
• DUAL algorithm, or Diffusing update algorithm, used to update Internet protocol routing tables
• DUAL table, a special one-row and one-column database table
• Dual SIM cellphone
• Dual (brand), a manufacturer of Hifi equipment
• Dual county, referring to a Gaelic Athletic Association county which traditionally competes at a similar level in both Gaelic football and hurling
• 2-tuple (Double), a list or sequence with two elements

Media

• 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 (film)
• "Dual" (Heroes), an episode of Heroes
• Dual! Parallel Trouble Adventure, an anime series

See also

• All page titles starting from Dual
• Duality (disambiguation)
• Duel (disambiguation), a homonym
• Double (disambiguation)

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.