Example: These are/were the images presented by us.
Is "presented" in this case a postpositive adjective or a predicative adjective in an attributive clause?
In case "presented" is a verb here, can I use it without using subject, like in the example above?
[1] These are the images [which were presented by us].
[2] These are the images [presented by us].
Compare the two examples. In [1] the bracketed element is a relative clause modifying "images".
In [2] the bracketed clause also modifies "images", but this time it's a past-participial clause, not a relative one. Semantically they are similar, of course, but we don't call [2] a relative clause since there's no possibility of inserting a relative phrase (cf. *"These are the images which presented by us".). I don’t want to be positing a deleted verb.
Some people call [2] a 'reduced relative clause', but that term is a misnomer. The crucial property of relative clauses is the presence of some relativised element (overt or covert) that is anaphorically linked to a noun or nominal, and this property is not present here.
