Two Views of the Logic of Plurals and a Reduction of One to the Other
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Date
2015-08
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Studia Logica
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Abstract
There are different views of the logic of plurals that are now in circulation, two of which we will compare in this paper. One of these is based on a two-place relation of being among, as in ‘Peter is among the juveniles arrested’. This approach seems to be the one that is discussed the most in philosophical journals today. The other is based on Bertrand Russell’s early notion of a class as many, by which is meant not a class as one, i.e., as a single entity, but merely a plurality of things. It was this notion that Russell used to explain plurals in his 1903 Principles of Mathematics; and it was this notion that I was able to develop as a consistent system that contains not only a logic of plurals but also a logic of mass nouns as well. We compare these two logics here and then show that the logic of the Among relation is reducible to the logic of classes as many.
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This is a post-peer-review, pre-copyedit version of an article published in Studia Logica. The final authenticated version is available online at: https://doi.org/10.1007/s11225-014-9591-y
Keywords
Plurals, Pluralities, Classes as many, The among relation, The “is one of” relation
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Cocchiarella, N. "Two Views of Plural Logic," Studia Logica, (2015) vol 103 issue 4: 757-780.
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