The correct expression seems to be "a proven proposition". However, I see many examples in the literature using "a proved proposition". Is this incorrect or poor English? For example, from the Merriam-Webster dictionary, the definition of Corollary:
1: a proposition (see PROPOSITION entry 1 sense 1c) inferred immediately from a proved proposition with little or no additional proof
Many thanks.
The two past paticiples are equally correct, but "proven" is more common used as an adjective before a noun.
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The two past paticiples are equally correct, but "proven" is more common used as an adjective before a noun.
a proven proposition
"Proven" is the more common.
It's probably best analysed as an adjective, rather than a verb, since it can function predicatively, as in The case for the prosecution is proven.