Full Idea
The view that constitution is identity has many versions: eliminativism (van Inwagen), identity relative to time (Gallois), identity relativized to sort (Geach), four-dimensionalism (Lewis, Sider), contingent identity (Gibbard), dominant kinds (Burke).
Gist of Idea
There are at least six versions of constitution being identity
Source
Kathrin Koslicki (The Structure of Objects [2008], 7.2.7.2 n17)
Book Reference
Koslicki,Kathrin: 'The Structure of Objects' [OUP 2008], p.179
A Reaction
[she offers other names- useful footnote] Eliminativism says there is no identity. Gallois's view is Heraclitus. Geach seems to deny nature, since sorts are partly conventional. 4-D, nah! Gibbard: it could be the thing but lack its identity? Kinds wrong.