Universiteit Leiden

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Workshop: Identity, extensionality and constitution

Thursday 24 October 2019
Past events 2019
P.J. Veth
Nonnensteeg 1-3
2311 VJ Leiden

This workshop focuses on the interplay between mereological principles and the individuation of entities. Classical mereology ascribes to extensionality principles, according to which, if objects have the same parts, they are the same object. Some go further and even ascribe to the idea that a whole is simply identical to its parts. Well-known constitution cases pull us in the opposite direction however: one might think that a statue and a lump of clay have the same parts, but are nevertheless distinct things. This workshop aims to generate a discussion of these different pulls on individuation and composition, bringing toSpeakersgether speakers who explore different ways of answering them.

9:00 – 10:45

Martin Lipman


Having the same parts and being the same mass’

11:00 – 12:45

Annina Loets


Material constitution, social constitution


12:45 – 13:45



13:45 – 15:30

Aaron Cotnoir



Building vs. Carving: In Defence of Mutual Parthood’

15:45 – 17:30

Roberto Loss


‘On being identical to a plurality of atoms'






For more information, please contact Martin Lipman.
Link to external website.


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