Dual Number ( Concept )

      |_ Abstract
            |_ Linguistic Property
                  |_ Morphosyntactic Property
                        |_ Number Property
                              |_ Dual Number


Dual refers to two members of a designated class [Crystal 1997: 26]. It typically occurs in a number system together with Singular and LargePlural, or with Singular, Trial and Multal.

Usage Notes
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The use of dualNumber varies across languages. For some languages, dual may be used to refer to any two entities; however, for some, dual must refer to a natural pair such as eyes, and for some it must refer to two items unless they are a natural pair [Corbett 2000] * A note on minimal/augmented systems (and also minimal/unit-augmented/augmented). Under such systems, the label 'minimal', when used with firstPersonInclusive will be mapped onto the concept dualNumber (when it would otherwise be mapped onto the concept singularNumber for other person values). For systems which also involve unit-augmented, this label will be mapped onto the concept dualNumber, except if one is dealing with firstPersonInclusive unit-augmented, which would be mapped onto the concept trialNumber [Corbett 2000, 166-169; McKay 1978] * There is an important theoretical question about whether minimal/unit-augmented/augmented should be considered separate concepts in the GOLD ontology. The main argument for this is that under such systems, the number values dual and trial are expressed only on the firstPersonInclusive by using the morphology otherwise associated with singular and dual respectively. However, as it is possible to specify a mapping from one system onto the other, we allow for a COPE to deal with this substantive issue while ensuring interoperability.

Language Code: yap First person exclusive refers to the participants referred to but not the hearer.
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We saw it.

Siewierska (2003:142)

Language Code: djd A dual morpheme refers to exactly two.
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Who do you two want to spear?

Schultze-Berndt (2000:92)


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