Here is a 3-paragraph summary of the article for mathopen.com:
The Carnival of Mathematics is a long-running blog roundup that collects some of the best math writing from across the internet each month. Issue 255 covers content from September 2026, bringing together a diverse collection of posts from math bloggers around the world. It is now live and ready for readers to explore.
This edition of the Carnival is hosted by Ben Leis over at his blog, Math Off The Grid. Ben has gathered highlights from the mathematical blogging community, curating posts that span a wide range of topics and styles. The Carnival is a great way to discover new math blogs and writers you might not have come across before.
The Carnival of Mathematics is organized in part by The Aperiodical, a popular math blog that contributes to and promotes each monthly edition. If you want to learn more about the series, submit a post for a future edition, or browse past issues, you can visit The Aperiodical's dedicated Carnival of Mathematics page. It is a wonderful ongoing celebration of math communication and community.