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Does a de Bruijn sequence exist for every length of rhyming pattern? Does every de Bruijn sequence form a cycle? How many universal poems are there of a given length?

Clare (like gare) is a Chalkdust editor. In her spare time, she’s an assistant professor at Durham University. She likes Skittles, probability, and making the magazine look more like Cosmo.

Chalkdust dissertation prize 2025
Calling all final-year students! This is your opportunity to get your work published as a Chalkdust article.
Unlocking sudoku’s secrets
Sara Logsdon looks to graph theory and abstract algebra for help on the puzzle page
Chalkdust dissertation prize
Calling all final-year students!
The big argument: What’s the best way to end a proof?
QED or $\square$?
Let them share cake
Or, how a simple problem can get very complicated, very quickly...
Feeling the love for Chalkdust T-shirts
The algebra will set your heart aflutter.