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PartsA Study in Ontology$
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Peter Simons

Print publication date: 2000

Print ISBN-13: 9780199241460

Published to Oxford Scholarship Online: October 2011

DOI: 10.1093/acprof:oso/9780199241460.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 27 October 2021

Occurrents, Classes, and Masses

Occurrents, Classes, and Masses

(p.129) 4 Occurrents, Classes, and Masses


Oxford University Press

This chapter discusses the mereology of three kinds of object for which it is reasonable to suppose the extensionality principle PPP holds: occurrents, classes, and masses. Classes and masses provide the most plausible concrete interpretations of classical extensional meteology. The ontological categories of class and mass have been relatively neglected by comparison with that of individuals, and they are introduced in the present chapter. The concept of class is not that found in contemporary set theory, but what is argued to be the old-fashioned notion of a plurality of individuals; this view is also explained in this chapter. Activities and performances are also discussed, along with plural reference, pluralities, analogies between ontology and mereology, mass reference and masses, parts of groups, and further possible applications of extensional mereology.

Keywords:   occurrents, classes, masses, mereology, ontology, pluralities, performances, plural reference, mass reference, parts

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