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Re:An open discussion forum for ArXiv papers by Sophira on Sunday September 08, 2024 @06:55AM (#41479626)
Why should they need to? Their email address did work at the time of publication.
Re:An open discussion forum for ArXiv papers by auggierose on Sunday September 08, 2024 @09:00AM (#41480149)
They don't have to. But then they cannot claim the paper.

It is a good idea in general to make sure that your papers contain up-to-date contact information. One way of doing this is to use an orc-id.