Abstract
A deductive theory is said to be elementary if it can be formalized in a first-order predicate language. A theory formalized in a second-order language is of the second order. In the same way theories of the third and of higher orders can be defined. Theories of the second and higher orders are called non-elementary.
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© 1981 Springer Science+Business Media Dordrecht
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Marciszewski, W. (1981). Elementary Theory. In: Marciszewski, W. (eds) Dictionary of Logic as Applied in the Study of Language. Nijhoff International Philosophy Series, vol 9. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-1253-8_27
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DOI: https://doi.org/10.1007/978-94-017-1253-8_27
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-8257-2
Online ISBN: 978-94-017-1253-8
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