Here’s a quick round-up of maths internet news this month!

Progress has been made on the Lonely Runner problem, which concerns when runners of different speeds going round a track will meet up, and has connections to higher-dimensional geometry.

A workshop for queer and trans people in category theory, which has an excellent logo, will take place in Hamburg, 12-14 August 2026. (via tessa on mastodon)

The board of the journal Communications in Algebra have resigned in protest at policies imposed by the publisher, Taylor and Francis – including doubling the number of reviewers needed on each paper, which the board consider to be unsustainable. (via Michael Kinyon)

The arXiv is becoming independent from Cornell University, and is looking to hire a $300k/year CEO.

April sees the start of the Month of Math – 5 weeks of puzzles shared every two days, organised by the Joy of Thinking Foundation.

And finally: weird symbol news! The mystery of the Unicode symbol ⍼ has been solved: it represents azimuth. (via Oscar Cunningham)