Biography Wikipedia
Wikipedia:
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 theoriesDual (grammatical number), a grammatical category used in some languagesDuality (electrical circuits)Dual diagnosis, a psychiatric diagnosis of co-occurrence of substance abuse and a mental problemDual fertilization, simultaneous application of a P-type and N-type fertilizerDUAL (cognitive architecture), an artificial intelligence design modelDUAL algorithm, or Diffusing update algorithm, used to update Internet protocol routing tablesDUAL table, a special one-row and one-column database tableDual SIM cellphoneDual (brand), a manufacturer of Hifi equipmentDual county, referring to a Gaelic Athletic Association county which traditionally competes at a similar level in both Gaelic football and hurling