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A rough week before the start of the elementary school summer.
A reader asked for a search feature!
What is a commutator, really?
A trip to Kingston for CMESG.
All the stuff that I brought to CMESG 2026
The hands out and slides for a talk at Bridges 2026.
An Esperanto trip, tk
A bit of projective geometry builds a Spot It deck or the Fano plane.
An old magic trick is used to introduce binary.
Attention conservation notice: This is a fix for a very niche problem. Unless your printer is eating certain character from your print job, you had best move on. The punchline is: flatten the PDF. The printer at work, a Ricoh IM C6500, doesn’t get along well with me. Sometimes, when printing a PDF it will garble the output and omit a lot of symbols. It drops math symbols and particular kernings, in particular ff. This makes it di icult to read papers.
The 4th week of summer.
The $\LaTeX{}$ template that I use for writing lecture notes.
A mushroom that I spotted by the community center
A story that I often think about.
The 3rd week of summer.
The first bloom of my kohleria plant.
The 3rd week of exams.
Writing online as a bunch of link
– Image by IronMew5 on DeviantArt. My family is watching Hilda. In the show, Hilda goes to stay with her Aunt Astrid whose house is amazing. It’s in the country, with a cool tower and a hammock, magical stuff all over the place. I dreamt that I was there enjoying the sauna, the library, all the perfect dream stuff1.
Another visit to the Lakeshore AVS. Only three plants this year.
