Aperiodical Maths News - <a href="https://form.jotform.com/imaginaryorg/idm-2026-help-us-find-a-theme">The International Day of Mathematics is looking for a theme for 2026.</a> <br> <br> (via <a href="https://mathstodon.xyz/@msmathcomputer/114545160433507217">Martin Skrodzki</a>)