mstdn.starnix.network is one of the many independent Mastodon servers you can use to participate in the fediverse.
Starnix is a Fediverse/ActivityPub Focused platform. Topics are mainly Technology and computer related but are not required to fall into those categories.
Why doesn't Arxiv have proper #RSS feeds? That way, one can read updates in specific subjects using their favourite feed reader. #feeds#newsboat#liferea#foss#arXiv