Every day, dozens of like-minded mathematicians gather on an online forum called Zulip to build what they believe is the future of their field. They’re all devotees of a software program called Lean.

Every day, dozens of like-minded mathematicians gather on an online forum called Zulip to build what they believe is the future of their field. They’re all devotees of a software program called Lean.

The University of Minnesota plans on closing the Vincent Hall math library by the summer of 2025, though the move is not welcomed by everyone. According to an announcement on Jan. 24 addressed to the ...